Prepared: March 2026  |  Classification: Academic Research

1. Case Study: The US–Iran Military Conflict and Global Energy Markets

1.1 Background and Trigger Events

On Saturday, 1 March 2026, the United States launched coordinated air strikes against Iran, initiating a military campaign that the Trump administration projected would last four to five weeks. The operation targeted Iranian military infrastructure including its naval assets in the Persian Gulf, significantly degrading Iran’s capacity to threaten the Strait of Hormuz — the critical chokepoint through which approximately 20 percent of globally traded petroleum transits.

The strikes followed a period of escalating tensions between Washington, Tehran, and Israel. The timing was notable: President Trump addressed a Texas energy rally emphasising domestic production success mere hours before the military operation commenced, underscoring the administration’s political sensitivity around energy costs.

1.2 Immediate Market Response

Global energy markets responded swiftly and sharply to the outbreak of hostilities. Within days of the strikes, the following market conditions emerged:

Indicator	Value / Impact
Global oil price change (week 1)	+16% from pre-conflict baseline
US average gas price movement	+$0.27 per gallon in one week
US national average (pump price)	$3.25 per gallon (as of 5 March 2026)
Year-on-year comparison	+$0.15 per gallon vs. same period 2025
Strait of Hormuz oil transit share	~20% of globally traded oil
Trump admin’s campaign timeline	4 to 5 weeks projected

The scale of the price shock was characterised by White House energy advisers as less severe than initially feared, though internal deliberations suggest significant concern about sustained price elevation affecting Republican electoral prospects in the November 2026 midterm elections.

1.3 The Political Economy Dimension

President Trump’s public posture — “if they rise, they rise” — contrasted sharply with private White House deliberations. Chief of Staff Susie Wiles and Energy Secretary Chris Wright engaged directly with oil industry executives to assess policy options, while Wiles reportedly warned in internal meetings that failure to address rising gas prices would be “catastrophic” for Republicans.

This tension between war-time presidential framing and domestic economic management reflects a structural dilemma: military operations targeting a major oil-producing region inevitably create energy market volatility that is difficult to insulate from domestic political consequences.

1.4 The Strait of Hormuz: Strategic Chokepoint

The Strait of Hormuz, located between Iran and Oman, represents one of the world’s most consequential maritime chokepoints. Beyond crude oil volumes, the strait carries substantial liquefied natural gas (LNG) exports from Qatar, making it directly relevant to global gas pricing and, by extension, to Singapore’s energy and petrochemical sectors.

KEY	The Strait of Hormuz carries roughly 20% of global oil trade and significant LNG volumes. Any sustained disruption — physical or perception-based — would ripple through Asian energy markets within days, given Singapore’s role as a regional trading and refining hub.

2. Outlook: Scenarios and Trajectory Assessment

2.1 Short-Term Outlook (0–3 Months)

The White House’s working assumption is that the Iran campaign will be concluded within four to five weeks, after which oil prices would retreat toward pre-conflict levels. This scenario is plausible if the following conditions hold:

• Iranian naval assets remain sufficiently degraded to prevent credible interdiction of Hormuz transits
• The conflict does not expand to involve regional proxies (Houthi forces in Yemen, Hezbollah in Lebanon, or Iraqi Shia militias)
• Saudi Arabia and other Gulf producers elect to increase output to offset supply disruptions
• US-backed maritime insurance and naval escort programmes successfully restore shipping confidence

However, a protracted or escalating conflict presents a materially different trajectory. Political and military analysts have questioned whether the administration has clearly articulated its strategic end-state, raising the possibility of mission creep or prolonged engagement.

2.2 Medium-Term Outlook (3–12 Months)

Several structural factors constrain the medium-term energy price outlook regardless of military outcomes:

• Shipping insurance markets price risk on perceived threat, not only on military facts; elevated premiums may persist well beyond active hostilities
• Refinery feedstock uncertainty could cause Asian refiners to seek more expensive alternatives, widening crude differentials
• A gasoline tax holiday or SPR release in the United States, if implemented, would temporarily suppress domestic prices but would not address Asian spot market dynamics
• Iran’s nuclear programme status post-conflict introduces further long-run geopolitical uncertainty

2.3 Scenario Matrix

Scenario	Oil Price Trajectory	Singapore Risk Level
Swift resolution (4–6 weeks)	Normalisation within 8–10 weeks; temporary 15–20% spike	Moderate — transient
Prolonged campaign (3+ months)	Sustained elevation; Brent potentially $100–110/barrel	High — structural
Regional escalation (proxies activate)	Severe disruption; Brent >$120/barrel possible	Critical — systemic
Hormuz closure (even partial)	Acute global supply crisis; price spike >$130+	Severe — emergency

3. Policy Solutions and Response Options

3.1 US Domestic Policy Options (and Their Limitations)

The Trump administration is evaluating several instruments, each carrying significant trade-offs:

Strategic Petroleum Reserve (SPR) Release

A temporary release of the SPR — the world’s largest emergency crude stockpile — would inject additional supply into domestic markets. However, the president publicly ruled this out as of 5 March 2026, and energy advisers have warned that a failed or insufficient intervention could rattle markets and prove counterproductive. The SPR is also at historically lower reserve levels than prior releases.

Federal Gasoline Tax Holiday

A temporary suspension of the federal gasoline excise tax ($0.184 per gallon) would provide limited consumer relief. The measure requires Congressional approval and would have negligible impact on global crude markets. It is primarily a political signalling tool rather than a substantive energy market intervention.

Ethanol Blend Relaxation

Loosening environmental regulations on summer-grade gasoline blends could increase ethanol content, marginally reducing refinery demand for crude-derived blendstock. This measure is operationally complex and offers only incremental price relief.

Maritime Escorts and Risk Insurance

The most substantive near-term measure announced is US-backed risk insurance for oil tankers transiting the Strait of Hormuz, coupled with potential naval escorts. This directly targets the shipping confidence problem rather than supply volumes, and energy executives quoted in the Reuters report identified this as the primary lever with meaningful impact.

3.2 International Coordination Options

The International Energy Agency (IEA) member nations, including the US, hold collective emergency reserves that could be coordinated for release in a more severe disruption scenario. OPEC+ producers, particularly Saudi Arabia and UAE, retain meaningful spare capacity and could choose to increase production — though geopolitical calculations will shape their willingness to do so.

3.3 Market-Based Adjustment Mechanisms

Energy markets will self-adjust over time: elevated prices incentivise increased production from non-Middle Eastern sources (US shale, Canadian oil sands, West African producers) and accelerate demand substitution toward LNG, renewable alternatives, and energy efficiency. However, these adjustments operate on a timescale of months to years, not weeks.

4. Impact on Singapore

4.1 Singapore’s Structural Exposure

Singapore’s economy is acutely exposed to energy market disruptions through multiple interlocking channels. As a small, open economy with no indigenous hydrocarbon resources, Singapore is a price-taker in global energy markets. Simultaneously, as a major refining, petrochemical, and trading hub, Singapore benefits commercially from elevated energy activity, creating a complex and asymmetric exposure profile.

NOTE	Singapore is simultaneously an energy importer (for domestic consumption and power generation), an energy trader and refiner (Jurong Island), and an LNG hub (Singapore LNG terminal). The conflict affects each role differently.

4.2 Direct Economic Impacts

Fuel and Electricity Costs

Singapore’s power grid relies heavily on piped natural gas from Malaysia and Indonesia, supplemented by imported LNG. A sustained increase in global LNG prices — driven by Qatari LNG export uncertainty via the Strait of Hormuz — would flow through to electricity tariffs for households and industries. Manufacturing, data centre operations, logistics, and hospitality sectors face immediate margin compression from higher energy input costs.

Fuel Costs and Inflation

• Pump prices at Singapore petrol stations are indexed to global refined product prices; a 16% oil price spike translates to significant retail fuel price increases within days
• Transport cost inflation cascades into broader consumer price inflation through logistics, food supply chains, and delivery services
• The Monetary Authority of Singapore (MAS) would face renewed inflationary pressure at a time when core inflation has been moderating

Aviation Sector

Singapore Changi Airport and Singapore Airlines are particularly vulnerable. Jet fuel constitutes roughly 30–35% of airline operating costs. Singapore Airlines’ extensive Middle East route network may also face airspace disruption if the conflict broadens, requiring costly rerouting.

Refining and Petrochemicals (Jurong Island)

Paradoxically, elevated crude prices and increased refining margins may temporarily benefit Singapore’s Jurong Island refining complex, which processes crude for re-export. However, feedstock procurement costs rise simultaneously, and a sharp price spike can suppress regional demand for refined products. Supply chain disruption to Middle Eastern naphtha and other petrochemical feedstocks presents a more direct risk to the chemicals cluster.

4.3 Trade and Shipping

Singapore’s position as the world’s second-largest port by container throughput and the busiest bunkering port globally makes it a node in Middle East–Asia trade flows. Disruption to Hormuz transits would:

• Reduce vessel traffic on Middle East–Asia trade lanes, affecting port throughput and ancillary marine services
• Increase bunkering demand and prices at Singapore as vessels are rerouted via alternative routes (e.g., around the Cape of Good Hope, adding significantly to voyage times and costs)
• Create opportunities for Singapore-based ship brokers, tanker operators, and commodity traders to capitalise on elevated freight rates and price volatility

4.4 Financial Markets

Singapore’s role as a regional financial centre means energy price shocks transmit through capital markets. The Singapore Exchange (SGX) hosts iron ore, rubber, and freight derivatives trading that is sensitive to global commodity conditions. The SGD may face appreciation pressure as a safe-haven currency, creating competitiveness headwinds for exporters.

4.5 Geopolitical and Strategic Dimensions

Singapore maintains a policy of strict neutrality and constructive engagement with all major powers. The US–Iran conflict places Singapore in a diplomatically delicate position: Singapore maintains trade ties with Iran (subject to sanctions compliance), hosts significant US military access arrangements, and has deep economic links with Gulf Cooperation Council states.

The conflict also raises questions about Singapore’s energy security architecture. The country’s LNG import infrastructure at the Singapore LNG terminal was designed precisely to diversify supply away from piped gas dependence. However, if LNG supply chains through the Strait of Hormuz are disrupted, Singapore’s diversification strategy requires further review.

4.6 Singapore Government Response Framework

The Singapore government possesses several response tools:

Indicator	Value / Impact
Strategic energy reserves	Singapore maintains mandatory oil stockpiles under IEA obligations (~90 days of net imports)
MAS monetary policy	Exchange rate management can partially offset import price increases
Fuel subsidy buffers	Targeted relief measures exist for lower-income households facing utility cost increases
Jurong Island continuity	Diversified feedstock sourcing from non-Gulf suppliers (West Africa, Americas) can partially offset Middle East disruption
Diplomatic engagement	Singapore can leverage ASEAN mechanisms and bilateral channels to advocate for Hormuz stability

5. Conclusion

The US military campaign against Iran represents a significant and still-unfolding shock to global energy markets. The Trump administration’s public insouciance — “if they rise, they rise” — belies intense internal deliberation over limited policy options, while political analysts warn that sustained price elevation could alter the landscape of the November 2026 midterm elections.

For Singapore, the conflict crystallises a familiar structural vulnerability: deep integration into global trade and energy systems generates prosperity but also transmits external shocks with speed and breadth that purely domestic policy tools cannot fully absorb. Singapore’s refining and trading sectors may see short-term revenue uplift, but the dominant economic effect is one of elevated costs, inflationary pressure, and heightened uncertainty.

The critical variable is conflict duration and geographic scope. A swift, contained resolution would allow markets to normalise within weeks and Singapore’s impacts to remain manageable. Escalation toward regional proxy engagement or, critically, any physical or effective closure of the Strait of Hormuz, would trigger a materially more severe and sustained economic disruption — one for which proactive policy preparation, not reactive crisis management, is the appropriate response.

CONCLUSION

Singapore should treat this conflict as a stress test of its energy security, financial resilience, and diplomatic dexterity simultaneously — preparing contingency frameworks for escalation scenarios while managing near-term inflationary pressures through targeted fiscal and monetary tools.