Lead: The United States announced a plan to release 172 million barrels from its Strategic Petroleum Reserve next week, to be delivered over about 120 days, as crude prices surged above $100 a barrel on Thursday. The move follows a broader International Energy Agency decision to free 400 million barrels from member emergency stocks after widespread Iranian attacks on energy infrastructure in the Middle East. The attacks damaged or threatened shipping and terminals across the Gulf, disrupting exports and prompting regional port suspensions and shelter-in-place orders.
Key takeaways
- The US will release 172 million barrels from the SPR, with deliveries spread over roughly 120 days starting next week, according to the Energy Secretary.
- The IEA agreed unanimously to a record 400 million-barrel coordinated release by its 32 members on Wednesday to soothe supply concerns.
- Brent crude rose 9% to $100.29 per barrel on Thursday; West Texas Intermediate climbed 8.6% to $94.75 per barrel.
- Since 28 February the strait of Hormuz has been effectively closed to some traffic amid attacks, threatening about one fifth of seaborne oil and gas flows.
- Several merchant vessels were struck near the strait, including the Thai-registered Mayuree Naree, with three crew reported as believed trapped.
- Iraq suspended operations at its oil ports after attacks on two nearby tankers; Bahrain ordered residents to stay home after strikes on fuel tanks in Muharraq Governorate.
- Oman moved ships out of Mina Al Fahal after drone strikes at another port, according to reporting that cited a port agent notice.
- Saudi Aramco warned of catastrophic market consequences if the Hormuz route remains blocked.
Background
The current supply shock follows a rapid escalation of hostilities after strikes originating from Iran and responses linked to a broader US-Israel confrontation with Tehran. Energy infrastructure and merchant shipping in the Gulf have been increasingly targeted, amplifying concerns about sustained interruptions to crude exports from the region. The International Energy Agency, representing 32 members, agreed to a historic 400 million-barrel release to stabilise markets, an action intended to reassure buyers facing dwindling available tonnage and rising insurance and freight costs.
Oil benchmark prices first returned to triple digits on Monday for the first time in four years, spiking as much as 29% before easing; the rebound on Thursday was tied to fresh attacks and renewed fears of prolonged disruptions. Key transit points such as the strait of Hormuz are vital for global seaborne oil and gas, and any effective closure has immediate implications for supply balances, shipping routes and refining feedstocks worldwide. National producers and trading houses have been adjusting tanker routings and cargo nominations in near real time as uncertainty deepens.
Main event
On Wednesday the IEA announced the unprecedented coordinated release of 400 million barrels of emergency crude from member stocks; shortly after, the United States said it would contribute 172 million barrels from its Strategic Petroleum Reserve. US Energy Secretary Chris Wright said the US move aims to blunt the impact of the attacks on global energy security and to ensure supplies for the domestic market and allies. The delivery timetable of about 120 days was presented as a way to smooth near-term market excesses rather than replace lost basin output permanently.
Across the Gulf, multiple facilities and vessels were struck. Shipping near the strait of Hormuz saw attacks on merchant vessels, with one owner reporting three crew on the Thai-flagged Mayuree Naree were believed trapped after an incident. In Iraq attacks on oil tankers prompted Halting of operations at local oil ports, and Bahrain reported damage to fuel-storage tanks in Muharraq Governorate and advised residents to remain home. Oman shifted vessels away from Mina Al Fahal, one of its primary export terminals, after drone strikes at another facility, according to reporting that cited port notices.
Market responses were swift: Brent crude rallied to $100.29 per barrel, up about 9% on the day, while WTI approached $95 per barrel. Asian equity markets fell on the moves, with the Nikkei 225 and South Korea’s Kospi both slipping as investors weighed the economic and logistical repercussions of a tighter oil market. Energy firms, shippers and insurers signalled elevated risk premiums for cargoes in the region.
Analysis & implications
The coordinated reserve releases mark a significant, coordinated policy response to a supply shock that could be prolonged if attacks continue or spread. Releases from emergency stocks can moderate price spikes and buy time for diplomatic or military steps, but they cannot replace sustained export capacity lost if terminals or shipping lanes remain unusable. The US contribution of 172 million barrels is large in absolute terms but is intended as a temporary buffer rather than a substitute for ongoing flows from Gulf producers.
Higher oil prices create immediate inflationary pressure worldwide, particularly for nations that import refined products. Central banks and fiscal authorities may face renewed pressure to respond if price-driven inflation expectations become entrenched. For oil-producing states in the Gulf, export disruptions can rapidly reduce revenues and complicate their domestic and foreign policy calculus, incentivising urgent repairs, defensive measures for terminals, and diplomatic efforts to de-escalate.
Geopolitically, the strikes and announcements underscore how energy infrastructure has become a vector for military and political signalling. The threat voiced by Iranian commanders that oil could reach $200 a barrel if regional security deteriorates further highlights the asymmetric leverage that choke points and export infrastructure confer. Such rhetoric can accentuate market nervousness even if actual supply losses remain patchy.
Comparison & data
| Measure | Value | Notes |
|---|---|---|
| IEA coordinated release | 400 million barrels | Unanimous decision by 32 IEA members |
| US SPR contribution | 172 million barrels | Planned release starting next week over ~120 days |
| Brent / WTI (Thu) | Brent $100.29, WTI $94.75 | Brent up ~9%, WTI up ~8.6% on the day |
The table shows the scale of public stock releases relative to daily global crude consumption of roughly 100 million barrels a day; while large, these releases should be interpreted as short-term cushions. Markets will watch how quickly released volumes hit the market and whether physical bottlenecks, insurance costs and rerouted voyages blunt their intended dampening effect on prices.
Reactions & quotes
We will begin delivering 172 million barrels from the Strategic Petroleum Reserve next week and work with allies to secure supply,
Chris Wright, US Energy Secretary (official statement)
Wright framed the US release as part of a broader allied effort to stabilise markets and accused Iran of threatening energy security. The timing and cadence of shipments will be scrutinised by refiners and traders assessing near-term availability.
Get ready for oil to be $200 a barrel, because the oil price depends on regional security, which you have destabilised,
Iranian military spokesperson (statement)
The Iranian remark was cited by regional reporting as rhetorical escalation, aiming to signal consequences for continued pressure on Tehran. Market participants treat such statements as risk cues that can alter sentiment independently of immediate physical disruptions.
If the Hormuz route remains blocked the consequences for global markets could be catastrophic,
Saudi Aramco (company warning)
Aramco’s warning highlighted the centrality of the strait for global trade and underlined industry concerns that chokepoint disruptions rapidly translate into tight markets and higher prices for consumers worldwide.
Unconfirmed
- The extent to which Iran is deliberately targeting specific export infrastructure rather than broad regional operations remains contested and not fully verified.
- The exact status and condition of the three crew reported ‘believed trapped’ on the Mayuree Naree has not been independently confirmed by an international maritime authority.
- Reports that the strait of Hormuz is fully closed are based on regional traffic disruptions and warnings, but full closure assessments vary by source and have not been uniformly verified.
Bottom line
The US decision to free 172 million barrels from the Strategic Petroleum Reserve is a major, short-term policy step to counter a sharp supply shock caused by escalating attacks on Middle Eastern energy infrastructure. Coordinated releases, led by the IEA’s 400 million-barrel decision, are intended to calm markets, but their ability to fully offset losses depends on how quickly the oil can be moved and whether Gulf export routes remain safe.
Investors, policymakers and energy companies should focus on delivery timelines, insurance and shipping costs, and on-the-ground access to terminals when assessing whether prices will stabilise. If attacks persist or escalate, market volatility and inflationary pressure could continue, amplifying economic and geopolitical risks worldwide.
Sources
- The Guardian — news reporting
- International Energy Agency (IEA) — official agency
- Reuters — international news agency (contributed reporting)
- Bloomberg — financial news reporting
- US Department of Energy — official government site