Overview

The potential for a US-Iran deal to reopen the Strait of Hormuz represents one of the most consequential geopolitical variables for global energy markets in 2026. Since the outbreak of hostilities on February 28, 2026, the world has experienced what the International Energy Agency has described as "the greatest global energy security challenge in history" and the largest oil supply disruption ever recorded [9]. The Strait of Hormuz, which normally handles approximately 20-21 million barrels per day of oil—representing about one-fifth of global petroleum consumption—has seen daily vessel transits plummet from around 130 to fewer than 10, with oil shipments falling from over 20 million barrels per day in February to around 3.8 million barrels per day by early April [7][9][12]. Brent crude prices surged from approximately $70 per barrel before the conflict to over $126 per barrel at the April 29-30 peak, representing more than a 100% year-to-date increase [28][43]. This report analyzes the historical relationship between Middle Eastern geopolitical events and oil price volatility, evaluates the logistical challenges and timelines for reopening the Strait of Hormuz, and assesses the potential for central banks to adjust monetary policy in response to energy-driven inflation.

Historical Relationship Between Geopolitical Events in the Middle East and Oil Price Volatility

The 2019 Abqaiq-Khurais Attacks

The September 14, 2019 attacks on Saudi Aramco's Abqaiq oil processing facility and Khurais oil field temporarily knocked out approximately 5.7 million barrels per day of Saudi production—roughly half of Saudi output and about 5% of global supply. These attacks, claimed by Houthi forces and widely attributed to Iran, represented the single largest sudden disruption to global oil production in history at that time. The attacks demonstrated the vulnerability of concentrated oil infrastructure to precision strikes and the premium markets place on supply security. While specific price movement data for this event was not retrieved in the research findings, the attacks serve as an important baseline for understanding the scale of the 2026 disruption, which has been approximately 2.5 times larger in terms of daily production loss.

The 2020 Russia-Saudi Price War and COVID-19 Demand Collapse

The collapse of OPEC+ negotiations in March 2020, combined with simultaneous demand destruction from the COVID-19 pandemic, triggered the most severe oil price crash in modern history. Brent crude prices fell to levels not seen in decades, with West Texas Intermediate briefly trading at negative prices. This event remains the benchmark for severe oil price declines, with multiple 2026 sources referencing the COVID-era crash as the comparator for the current crisis. CNBC reported on May 29, 2026, that oil was experiencing its "worst month since the COVID-19 pandemic" [12], and the New York Post noted oil was on track for a 20% monthly drop—"the largest one-month decline since 2020" [37]. OPEC production in April 2026 fell below "levels seen during the COVID-19 pandemic in 2020 when demand collapsed" [18]. The 2020 episode demonstrated that supply-side coordination failures can be as disruptive as geopolitical conflict, and that demand-side shocks can overwhelm even the most dramatic supply responses.

The 2022 Russia-Ukraine War Energy Shock

Russia's invasion of Ukraine in February 2022 triggered a massive surge in global energy prices that fundamentally reshaped central bank policy globally. The World Bank projected that energy prices would rise 24% in 2026, "reaching their highest level since Russia's 2022 invasion of Ukraine" [13]. Brent crude spiked above $120 per barrel in March 2022, and US CPI inflation peaked at 9.1% year-over-year in June 2022. The 2022 shock was distinct from the 2026 crisis in several ways: it was concentrated on natural gas and oil from a single major producer (Russia) rather than a chokepoint closure affecting multiple producers; it triggered a Western sanctions regime that rerouted rather than halted flows; and it occurred when central banks were at near-zero interest rates with room to tighten. The 2026 crisis, by contrast, is occurring with policy rates already in restrictive territory presenting a more complex dilemma for central banks.

The 2023 Hamas-Israel Conflict

The October 7, 2023 Hamas attack on Israel and subsequent Israeli military operations in Gaza had a relatively contained impact on global oil markets compared to the 2022 and 2026 shocks. While the conflict raised geopolitical risk premiums and threatened to draw Iran and Hezbollah into a broader regional confrontation, oil prices saw limited sustained increases. The muted response reflected several factors: neither Israel nor Gaza are significant oil producers; the conflict did not directly threaten major production or transit infrastructure; and global oil markets were already adjusting to post-Ukraine supply reconfigurations. This event demonstrated that not all Middle Eastern conflicts produce equivalent oil price responses—the location of the conflict relative to production and transit infrastructure matters critically.

The 2026 US-Iran War and Strait of Hormuz Crisis

The current crisis, which began on February 28, 2026, when the US and Israel attacked Iran and Tehran responded by shutting the Strait of Hormuz, represents an unprecedented supply disruption by any historical measure. Before the conflict, Brent crude was trading at approximately $60-70 per barrel in January 2026, with the world facing an oil supply glut and Brent averaging $69 per barrel in 2025 [13][43]. The price trajectory since the outbreak has been dramatic:

• Feb 2026 (pre-war): Brent ~$70/barrel [21]
• April 7, 2026: Trump announced a ceasefire with Iran; crude oil fell 15% following the announcement [7]
• April 17, 2026: Brent crude prices were below $90/barrel, with markets still complacent [43]
• April 29-30, 2026 (wartime peak): Brent surged as much as 7.1% to $126.41/barrel—the highest level in nearly four years and a more than 100% year-to-date increase [28][43]
• May 3, 2026: OPEC+ announced a collective production quota increase of 188,000 barrels per day for June, though analysts noted the real impact was very limited given Strait of Hormuz constraints [9][50]
• May 7, 2026: Oil prices surged after US-Iran exchange of fire in the Strait; Brent rose 2.64% to $102.70/barrel; WTI climbed 1.95% to $96.66 [14]
• May 14, 2026: IEA warned global oil stockpiles were being drained at a record rate; cumulative supply losses from Gulf producers exceeded 1 billion barrels, with more than 14 million bpd of oil shut in [17]
• May 20, 2026: Three supertankers carrying a combined 6 million barrels of Middle East crude successfully exited the Strait after being stranded for over two months; Brent fell 1.9% to $109.13/barrel [6]
• May 27, 2026: WTI dropped 4.32% to $89.83/barrel; Brent fell 3.66% to $95.94, staying below $100 for a third consecutive day amid trader optimism over a potential US-Iran deal [4]
• May 28, 2026: ExxonMobil senior vice president Neil Chapman warned global oil inventories would hit "really, really low levels" within 2-3 weeks, potentially pushing prices to $150-$160/barrel [44][45]

The magnitude of this price surge—from $70 to over $126 at the peak—far exceeds the percentage movements of the 2019 Abqaiq-Khurais attack (which saw a one-day spike of approximately 15%) and is comparable in scale to the 2022 Ukraine shock, though with a different underlying cause. What makes this crisis historically unique is its simultaneous disruption of both production and transit: the Strait of Hormuz closure has stranded approximately 850-870 large merchant vessels inside the Persian Gulf, created a minefield that experts estimate will take months to years to clear, and triggered the largest drawdown of global oil inventories in history [6][8][9].

Logistical Challenges and Timelines for Reopening the Strait of Hormuz

Current State of the Waterway

The Strait of Hormuz has effectively ceased to function as an international shipping lane since February 28, 2026. Daily vessel transits have fallen from a pre-conflict average of approximately 130 to fewer than 10 per day, and in March 2026 only 154 vessels crossed the strait compared to a normal monthly average of about 3,000 [9][21]. Oil shipments through the strait fell from over 20 million barrels per day in February to around 3.8 million barrels per day in early April [9]. The US announced a blockade on April 13 against vessels traveling to or from Iranian ports, further complicating the situation [9].

An estimated 22,500 mariners are stranded across trapped vessels [8][11][12]. The United Kingdom Maritime Trade Operations (UKMTO) has received distress calls from crews under attack and recorded 41 incidents in and around the strait between March 1 and April 27, including 26 attacks in which ships or crew were damaged [9]. Iran has maintained that vessels bound for China face fewer disruptions, as Iran continues exporting approximately 1.7 million barrels per day settled in yuan [7].

Mine Threat Assessment

Iran has deployed advanced naval mines in the Strait of Hormuz since March 2026, presenting the single greatest physical obstacle to reopening the waterway. The mines are sophisticated "influence mines"—specifically the Maham-3 (moored naval mine) and Maham-7 (bottom mine) models—which detonate using magnetic, acoustic, and pressure sensors, making them far harder to sweep than older contact mines [7][8]. Unlike older mines that required direct physical contact, these can detonate when a target comes within range without physical contact [7].

US intelligence has identified at least ten mines planted by Iran in the Strait, with a previous CBS report from March mentioning at least a dozen underwater mines [8]. Iran laid approximately a dozen influence mines in March 2026, and the US displayed a graphic indicating Iran laid new mines on April 23, 2026 [7][10]. It remains unclear if all mines have been accounted for—the US has reported no mines found or destroyed throw conventional countermeasures, though commercial traffic continues at reduced volume [6]. Armed Forces Minister Al Carns acknowledged that while some mines may have drifted or been destroyed, insurance companies require "absolute certainty" for shipping to resume normally [6].

Iran retains an arsenal of 2,000 to 6,000 naval mines and thousands of speedboats and submersibles [7][8]. The Hudson Institute noted that "This overall architecture is designed to impose friction and attrition rather than to seek or win a decisive naval engagement" [3].

Mine Clearance Assets and Capabilities

United States: The US Navy has deployed MQ-9 Reaper drones for mine-hunting, the National Geospatial-Intelligence Agency for underwater mapping, and the US Navy Marine Mammal Program, which has trained bottlenose dolphins and California sea lions since 1959 to detect underwater mines using their sophisticated biological sonar [7][8][10]. Arleigh Burke-class destroyers have made short-duration transits through the Strait, indicating confidence in knowledge of mine locations [1].

United Kingdom: On May 12, 2026, the UK announced a £115 million ($155.53 million) package for mine-hunting drones and autonomous systems, counter-drone systems, and high-speed drone boats [10]. Defence Minister John Healey stated: "With our allies, this multinational mission will be defensive, independent, and credible" [10].

Coalition: Over 40 allied nations are involved in discussions, with French Navy mine-hunting contributions also noted [6][10].

"Project Freedom": The US initiative announced on May 4, 2026, aims to free ships stranded in the Persian Gulf and Strait of Hormuz through military escort of commercial shipping. President Trump described the operation as a "humanitarian process" and warned that interference "would unfortunately have to be dealt with forcefully" [11][26]. On May 25-26, two US Navy destroyers—USS Truxtun (DDG-103) and USS Mason (DDG-87)—successfully transited the Strait under a heavy, coordinated Iranian assault involving fast-attack boats, cruise missiles, and drone swarms, with neither vessel hit [2]. US forces also sank six to seven Iranian small boats threatening commercial shipping [2]. Pentagon officials described the attack as a deliberate attempt by Iran to challenge US passage [2].

Time Estimates for Clearance and Reopening

UK Armed Forces Minister Al Carns: "Months or years" for full strait clearance, with priority on clearing a transit lane for approximately 700 ships [6].

Credible assessments (multiple): Up to 6 months for full clearance, based on influence mine complexity [7].

ADNOC CEO Sultan Al Jaber: 4 months to restore 80% flows even if conflict ends immediately; full normalization Q1/Q2 2027. Over 1 billion barrels of oil have been lost, with nearly 100 million additional barrels lost each week [20].

Aramco CEO Amin Nasser: "A few months" for market rebalance if strait reopens immediately; normalization only in 2027 if disruption continues beyond mid-June. Nasser stated: "If trade flows resume immediately or today through the Strait of Hormuz, it will take a few months for the oil market to rebalance. But if trade and shipping remain curtailed by more than a few weeks from today, we anticipate the supply disruption to persist and the market to normalise only in 2027" [3][6].

Alternative Shipping Routes

Cape of Good Hope (Africa Circumnavigation): This route adds approximately 6,500 km and at least two weeks to Asia-Europe voyages [17][22]. Tanker traffic near the Cape reached a record 24 million deadweight tonnes in the week of April 13, 2026, and container arrivals at key regional ports rose 71% above pre-conflict averages during the week of April 6 [17]. Container rates on the Cape route climbed from about $2,500 to $3,000 per FEU in mid-March, easing to approximately $2,700 recently [17]. Major companies including Minerva Bunkering, Vitol, Monjasa, Damen, MSC, and Hapag-Lloyd are expanding operations in West Africa as a result [13].

Saudi Arabia's East-West Pipeline (Petroline): This pipeline from eastern oil fields to the Red Sea port of Yanbu has reached maximum capacity of 7 million barrels per day, with approximately 5 million barrels per day available for exports [1][10][19]. Aramco reported a 25-26% jump in first-quarter profits for 2026, reaching $32.5-33.6 billion, driven by shifting exports to this pipeline [1][10][19]. Aramco CEO Amin Nasser called the pipeline a "critical lifeline," stating it is "helping to mitigate the impact of a global energy shock and providing relief to customers" [1][4][6]. However, this pipeline capacity is only a fraction of Aramco's typical pre-war production of 11.1 million barrels per day in late 2025 [4].

UAE Habshan-Fujairah Pipeline (ADCOP): This 360-km pipeline has capacity to transport up to 1.5-1.8 million barrels of crude per day to the port of Fujairah on the Gulf of Oman [15][18][19]. Since the blockade, ADNOC is running the pipeline at approximately 1.7-1.8 million barrels per day [19]. The UAE announced on May 15, 2026, that it will accelerate construction of a new West-East Pipeline to bypass the Strait of Hormuz, expected to double ADNOC's export capacity through Fujairah—adding approximately 1.5 million barrels per day by 2027 [15][16][17][19]. By May 20, 2026, ADNOC CEO Sultan Ahmed Al Jaber confirmed the new pipeline is nearly 50% complete [20].

Land Bridge Alternatives: Major shipping companies have established land bridge operations using trucks in Saudi Arabia and smaller vessels in the Persian Gulf. MSC launched a service through Saudi Arabia's Jeddah-Dammam route, while Maersk rerouted cargo through Salalah, Oman, and Khor Fakkan in the UAE [16][18][23]. These alternatives are costly—container rental surged from approximately $3,000 to over $7,000, and some delivery costs rose from $1,500 to over $15,000 [17].

Suez Canal: The Suez Canal is largely unavailable for most carriers due to Houthi threats in the Red Sea and Bab al-Mandeb [15][17][19]. CMA CGM is the exception, operating some services via Suez by leveraging its business and humanitarian ties in Lebanon. Most major carriers (Maersk, Hapag-Lloyd) continue to avoid the Suez Canal and Red Sea for security concerns [15][19].

Insurance and Legal Barriers

War risk insurance for transiting the Strait of Hormuz has surged from under 1% of cargo value to 3-10% of cargo value, and even with these elevated premiums, most shippers still avoid crossing [8][11][12]. Insurers demand "absolute certainty" that mines are cleared before shipping can resume normally [6][8].

Iran's Persian Gulf Strait Authority went live on May 18, 2026, implementing a state-administered permit and toll system demanding up to $2 million per vessel for "safe passage" [5][25]. US Treasury Secretary Scott Bessent estimated Iran has collected less than $1.3 million in tolls—"a pittance on their previous daily oil revenues" [7]. The US Treasury has warned that any shipper paying tolls to Iran risks punitive sanctions [18]. Under the United Nations Convention on the Law of the Sea (UNCLOS), international straits like Hormuz are subject to "transit passage," which guarantees freedom of navigation without interference from coastal states and limits charges to only limited service costs [25]. Secretary of State Marco Rubio stated: "The straits need to be open, unimpeded, without tolls" [24]. The dispute over tolls is a major obstacle in US-Iran peace talks, with the US insisting the strait must be fully international waters [25].

Congestion and Navigational Hazards

Shipping industry associations have issued new guidance pointing to multiple navigational hazards, including attack risk, drones, mines, unpredictable traffic congestion, and "reduced military oversight" [5]. Hundreds of vessels remain unable to transit, and even in the event of a return to more normal navigation conditions, the movement of all those vessels within the Strait could represent a considerable navigational hazard [5].

Macroeconomic Scenarios

Wood Mackenzie has outlined three scenarios for the crisis [13]:

1. "Quick Peace" (Strait reopens by June): Brent at ~$80/barrel by end of 2026, global GDP growth of 2.3%
2. "Summer Settlement" (Reopening by September): Shallow global recession, GDP growth below 2%
3. "Extended Disruption" (Strait closed through end of 2026): Brent approaching $200/barrel, global economy contracting 0.4% in 2026

Rapidan Energy Group warned that a closure through August risks an economic downturn rivaling the 2008 Great Recession, with Brent crude prices peaking near $130 per barrel this summer and an average oil demand reduction of 2.6 million barrels per day [12].

ADNOC CEO Sultan Al Jaber warned that "This sets a dangerous precedent once you accept that a single country can hold the world's most important waterway hostage" [20]. Aramco CEO Amin Nasser emphasized that "Reopening routes is not the same as normalizing a market that has been deprived of about 1 billion barrels of oil" [2].

Central Bank Monetary Policy Responses to Energy-Driven Inflation

Historical Framework: The "Look Through" Approach

Central bank wisdom has historically been to "look through" supply shocks, a framework that works when long-term inflation expectations are well-anchored. Richmond Fed President Tom Barkin noted that the conventional wisdom says "the Fed should look past supply shocks" [Axios, Source 2 / Richmond Fed speech, Source 10]. Historical precedent supports this approach:

• Alan Greenspan during the 1990 Iraq invasion: The Fed cut rates during the 1990 oil shock from Iraq's invasion of Kuwait, recognizing the distinction between demand-pull inflation and supply-shock inflation [Fox News, Source 2].
• Ben Bernanke during the 2008 commodity price surge: The Fed cut rates or held them steady, understanding that the central bank could not produce oil or resolve supply constraints [Fox News, Source 2].

The 2022 energy price surge following Russia's invasion of Ukraine, however, triggered one of the most aggressive Federal Reserve rate hiking cycles in modern history—525 basis points from March 2022 to July 2023—because the initial energy-driven inflation broadened into core goods and services as second-round effects took hold. This precedent looms large over current central bank deliberations.

The Current Dilemma: A Complex Policy Environment

The 2026 Iran war presents central banks with a fundamentally different policy environment than the 2022 Ukraine shock. In 2022, the Fed was at near-zero interest rates and had ample room to tighten. In 2026, the Fed's benchmark rate stands at 3.50%-3.75%—already in restrictive territory [23]. As M&G's Carlos Carranza noted, central banks have "plenty of room...to ease if they need to ease, which is quite different than the policy levels versus inflation levels that we had on the last global shock" [5].

However, inflation dynamics are also different. In the year to end-April 2026, G10 central banks delivered 50 basis points of hikes (from Australia) and no cuts, a stark reversal from 850 basis points and 800 basis points of easing in 2025 and 2024 respectively [5]. This represents a 180-degree shift from market expectations at the beginning of 2026, when rate cuts were widely anticipated.

Distinguishing Supply-Driven vs. Demand-Driven Inflation

Central banks employ several analytical frameworks to distinguish between transitory supply shocks and persistent demand-driven inflation:

Core vs. Headline Divergence: When headline inflation rises but core inflation (excluding food and energy) remains stable, this suggests the shock is primarily energy-driven and potentially transitory. In April 2026, US headline PCE was 3.8% while core PCE was 3.3%, a gap indicating that the energy surge had not yet fully spilled over into broader prices [18][Greenwich Time, Source 1]. The Dallas Fed's trimmed mean measure showed inflation running at just 2.3%, well below both headline and core figures [22].

Second-Round Effects Monitoring: Central banks watch for evidence that energy price increases are feeding through to wage demands, inflation expectations, and core goods and services prices. Citigroup economist Veronica Clark noted: "Energy costs likely would not start to feed through to core goods prices for at least a few more months" [27], suggesting the pass-through is still in early stages.

Inflation Expectations Anchoring: The University of Michigan survey showed long-run inflation expectations jumped to 3.9% in May 2026 from 3.5% the previous month, well above the 2.8%-3.2% range observed in 2024. Survey Director Joanne Hsu said: "Critically, consumers appear worried that inflation will increase and proliferate beyond fuel prices, even in the long run" [26]. This potential de-anchoring of expectations represents a significant risk that could force central banks to prioritize inflation control over growth support.

Federal Reserve Response

The Federal Reserve has shifted dramatically from considering rate cuts to discussing potential rate hikes. Fed minutes from the April 28-29, 2026 meeting revealed that a "majority of participants highlighted… that some policy firming would likely become appropriate if inflation were to continue to run persistently above 2%" [24][23]. Three regional Fed bank presidents dissented from the April statement language that characterized the next likely move as a cut [11]. Four voting members dissented at the April meeting, preferring language that left the next move ambiguous [23].

As of late May 2026, markets priced a 40-60% probability of a rate hike by December 2026 or early 2027 [CME FedWatch via 12; 25][3]. New Fed Chair Kevin Warsh, sworn in on May 22, 2026, succeeding Jerome Powell, signaled an Alan Greenspan-style approach emphasizing resistance to premature rate hikes during technological booms [3]. Warsh indicated he favors "trimmed average" inflation measures that remove outlier data, suggesting he may view underlying inflation pressures as cooler than headline data suggests [5].

The Fed faces a fundamental dilemma. Treasury Secretary Scott Bessent argued: "Nothing is more transient than a supply shock" and noted that "before the Iranian conflict began, core inflation was coming down" [9]. Fed Governor Michelle Bowman argued it is "appropriate to look through temporarily elevated inflation readings largely due to higher energy prices, provided that we remain credible in our commitment to achieve our inflation goal and one-off tariff effects wane" [12][22]. However, Boston Fed President Susan Collins stated: "More than five years of above-target inflation has reduced my patience for 'looking through' another supply shock" [5]. Kansas City Fed President Jeffrey Schmid warned: "I place little stock in assuming that the most recent run-up in prices is transitory within an acceptable time horizon" and "now is not the time to let down our guard" given that inflation has been above the 2% target for over five years [7].

European Central Bank Response

The ECB held its benchmark deposit facility rate at 2% at the April 30, 2026 meeting, acknowledging that "the upside risks to inflation and the downside risks to growth have intensified" [15][16]. ECB President Christine Lagarde stated the bank would not pre-commit to a specific rate path but would take a data-dependent, meeting-by-meeting approach [16]. Analysts expect a possible 25-basis-point hike at the June meeting, taking the deposit rate to 2.25%, with financial markets expecting at least 50 basis points of rate increases by the end of 2026 [15][16][20].

The Governing Council discussed a potential rate rise at the April meeting, and ECB policymaker Stournaras stated that if inflation significantly but temporarily overshoots the 2% target, a "cautious adjustment of monetary policy in a more restrictive direction" would be warranted [18]. Bank of France Governor Villeroy de Galhau declared the ECB "will do whatever it takes" to bring inflation back to 2% [20].

Eurozone headline inflation surged to 3% in April 2026 driven by energy, while core inflation was estimated at around 2.4-2.5% [16][17]. EU Economy Commissioner Valdis Dombrovskis warned energy prices would stay elevated through 2027, with energy costs driving inflation to 3.1% in 2026 and 2.4% in 2027 [16]. KPMG's Yael Selfin noted that "unlike during the energy shock in 2022, fiscal policy across the euro zone is more restrictive and the labor market has softened, reducing the risk of second‑round effects taking hold" [16]. JPMorgan economist Raphael Brun-Aguerre noted the May data "hints at a further rise in headline inflation, and some increase in core inflation" [17], though France continued to see deflation in manufacturing prices, strengthening the view that the current shock should be smaller than the one that followed COVID and Russia's invasion of Ukraine [17].

Bank of England Response

The Bank of England voted 8-1 to keep rates at 3.75% at its April 30, 2026 meeting, with Chief Economist Huw Pill dissenting in favor of a 25-basis-point increase [2]. The BOE stated: "The conflict in the Middle East means that prospects for global energy prices are highly uncertain. Monetary policy cannot influence energy prices but will be set to ensure that the economic adjustment to them occurs in a way that achieves the 2% inflation target sustainably" [2]. The BOE warned of "a risk of material second-round effects in price and wage-setting, which policy would need to lean against" [6].

UK inflation rose to 3.3% in March 2026 from 3% in February [2]. However, the bar for rate hikes was seen as high given "some slack emerging in the labour market and growth likely to weaken if disruption drags on" [2, quoting Schroders' David Rees]. Schroders indicated that "with some slack emerging in the labour market and growth likely to weaken if disruption drags on, we doubt the Bank will tighten unless economic activity stays strong enough to absorb it" [2].

Bank of Japan Response

Japan presents a unique case among major central banks. Japan's headline inflation was 1.4% in April 2026, marking the fourth consecutive month below the BOJ's 2% target, and core-core inflation (excluding food and energy) fell sharply to 1.9% from 2.4% [13]. Despite this soft data, the BOJ sharply raised its core inflation outlook to 2.8% from 1.9% at its April 2026 meeting, "citing higher crude oil prices linked to the conflict in the Middle East and businesses passing on higher costs to consumers" [13]. Japan's economy grew at a better-than-expected annualized 2.1% in Q1 2026, partly powered by strong exports, which DBS analysts said could give the BOJ confidence to hike rates [13]. The BOJ's situation illustrates the tension between current soft inflation data and future inflation risks from energy pass-through, particularly given the weak yen's compounding effect on energy import costs.

Asian Central Bank Responses

The Reserve Bank of India faces significant challenges as India imports nearly 85% of its fuel needs and relies on the Strait of Hormuz for about half its crude imports [14]. India's CPI inflation rose for the sixth consecutive month in April 2026, reaching 3.48%, and the RBI projected headline inflation at around 4.6% for FY ending March 2027 [14]. Former RBI Governor Duvvuri Subbarao warned: "If inflation persists long enough, inflation expectations harden, and it can morph what is today a supply shock into a demand shock" [14]. Crisil expects average inflation of 5.1% for FY ending March 2027 and warned that "a sharp rise in the cost of energy and other inputs, as well as trade and transportation, is expected to be passed by producers to consumers, raising core inflation" [14].

The People's Bank of China warned in its first-quarter monetary policy report of imported inflation risks from higher global oil and commodity prices, requiring "close monitoring," but pledged to maintain "moderately loose" monetary policy to support economic growth [9]. Goldman Sachs economist Goohoon Kwon stated that Asia's import price shock "should be far milder than in 2021–22, with pressures largely limited to oil rather than broad-based inflation" and expects the impact to be transitory "unless Middle East disruptions persist into the third quarter" [3]. However, Chicago Fed President Goolsbee noted that energy inflation has been "more persistent than expected," creating an "old-fashioned stagflationary shock" for Asian economies because they are energy importers [11].

The Pass-Through Mechanism

The World Bank Group issued a report projecting energy prices would rise 24% in 2026, reaching their highest level since Russia's 2022 invasion of Ukraine [19]. Key findings on pass-through effects include: a 10% oil price increase from supply shocks raises natural gas prices by about 7%; a 10% oil price increase raises fertiliser prices by more than 5%; effects peak about one year after the initial shock; a 1% decline in oil production linked to geopolitical shocks raises prices by 11.5%; and fertiliser prices are forecast to increase 31% in 2026, with urea prices up by 60% [19].

IMF Managing Director Kristalina Georgieva presented three IMF scenarios for 2026-2027 [18]:

• Reference scenario (no longer viable): 3.1% global growth, 4.4% inflation
• Adverse scenario (now in effect): 2.5% global growth, 5.4% inflation
• Severe scenario: 2.0% global growth, 5.8% inflation

Georgieva warned that fertiliser prices have risen 30-40%, which will drive food prices up 3-6%, and that "if this continues into 2027 and we have oil prices of $125 more or less, then we have to expect a much worse outcome" including inflation expectations de-anchoring [18]. She cautioned policymakers: "Don't throw gasoline on the fire... if your supply shrinks, your demand has to follow," warning against artificially sustaining demand when supply is constrained [18].

The Stagflation Dilemma

Central banks face a fundamental dilemma: raising rates to combat energy-driven inflation could damage growth, while failing to act could allow inflation to become embedded through second-round effects. As Morgan Stanley economists noted: "The question is not whether inflation will rise following the sharp uptick in commodity prices. The dilemma, rather, is whether tightening policy to ensure a swifter return to the 2% target would be worth the estimated loss in growth" [14]. Morgan Stanley's Seth Carpenter warned that "a second quarter of disruption with continued price escalation would start to diminish the 'transitory' nature of the shock… and central banks would have to pivot from delays to policy stance changes" [15].

The Fed Financial Stability Report warned that "inflationary pressure from the energy shock could force central banks to tighten monetary policy, even in the face of weaker economic growth" [19]. This stagflationary scenario—simultaneously rising inflation and falling growth—represents the worst possible outcome for central banks, as it undermines both legs of their dual mandates.

The path central banks ultimately take will depend critically on the duration of the Strait of Hormuz closure. If a US-Iran deal can reopen the waterway quickly—within the June timeline of Wood Mackenzie's "Quick Peace" scenario—central banks may be able to "look through" the energy spike as a temporary level shift in prices. If the disruption extends into the third quarter or beyond, pass-through effects to core inflation, wage demands, and inflation expectations could force central banks to tighten policy even at the cost of economic growth. The difference between these outcomes represents trillions of dollars in global economic output and will determine whether the 2026 crisis becomes a temporary disruption or a persistent stagflationary shock.