Oil prices plunge to 3-month low as US, Iran reach deal to reopen Strait of Hormuz

The United States and Iran announced a landmark framework agreement to end months of hostilities and reopen the Strait of Hormuz, triggering a sharp decline ...

What Happened

The United States and Iran announced a landmark framework agreement to end months of hostilities and reopen the Strait of Hormuz, triggering a sharp decline in global crude oil prices to their lowest levels in three months.
Brent crude futures fell approximately $4.33 (nearly 5%) to $83.00 per barrel, while US West Texas Intermediate (WTI) dropped $4.54 (5.35%) to $80.34 per barrel — both touching their lowest point since March 10, 2026.
Pakistan's Prime Minister, who served as the key mediator in the negotiations, confirmed that both sides would sign a Memorandum of Understanding (MoU) in Switzerland, formalising the preliminary agreement.
Under the deal's announced terms, the Strait of Hormuz would reopen on a "toll-free" basis under Iranian management within 30 days, and the American naval blockade of Iranian ports — in force since 13 April 2026 — would conclude.
A 60-day ceasefire period will run parallel to the MoU implementation, during which more comprehensive negotiations on nuclear issues and regional security arrangements are expected to proceed.
Market analysts cautioned that while the deal is price-positive, full restoration of the pre-crisis throughput of approximately 20 million barrels per day would take time, as stranded tankers clear backlogs and mine-clearance operations proceed.

Static Topic Bridges

MoU vs. Treaty — Key Distinction in International Law

A Memorandum of Understanding (MoU) is a non-binding international agreement that records the intention of two or more parties to cooperate toward a shared goal. A treaty, by contrast, is a legally binding agreement enforceable under international law, subject to registration requirements under Article 102 of the UN Charter and the legal principle of pacta sunt servanda ("agreements must be kept").

MoUs use softer language ("arrangement," "decide," "will endeavour") vs. treaties ("agree," "shall," "undertake")
MoUs do not require parliamentary ratification in most jurisdictions, making them faster to execute
The legal force of an MoU depends on the parties' stated intent — some MoUs can carry binding weight if they explicitly say so
In diplomatic practice, an MoU is often used as a stepping stone to a more formal treaty, allowing both parties to test implementation before full legal commitment
Pakistan's role as mediator in this MoU mirrors its historical position as a diplomatic bridge between the West and the broader Islamic world

Connection to this news: The choice of an MoU — rather than a formal peace treaty — signals that while both sides want to stabilise the situation quickly, comprehensive and legally binding resolution (on nuclear questions, sanctions, and regional security) will require a longer, more complex negotiation process.

JCPOA — Background to US-Iran Nuclear Diplomacy

The Joint Comprehensive Plan of Action (JCPOA) — commonly called the Iran Nuclear Deal — was signed in Vienna on 14 July 2015 between Iran and the P5+1 group (United States, United Kingdom, France, Russia, China, and Germany), with the EU as a facilitator. It was endorsed by UN Security Council Resolution 2231 (2015).

Iran agreed to: cap uranium enrichment at 3.67%, reduce its centrifuge count by two-thirds, limit its uranium stockpile to 300 kg, and accept intensive IAEA inspections
In exchange: broad economic sanctions on Iran were lifted, unlocking access to frozen overseas assets and international banking
On 8 May 2018, the US withdrew from the JCPOA, reimposing sanctions under a "maximum pressure" policy
Following withdrawal, Iran progressively violated JCPOA limits — enriching uranium to 60%+, reducing inspector access, and accelerating centrifuge deployment
The 2026 Iran war and Hormuz closure represent the most serious escalation since JCPOA's collapse

Connection to this news: The 2026 MoU framework implicitly reopens the question of nuclear restraint — the 60-day ceasefire period is specifically designed to allow parallel negotiations on nuclear and security issues, essentially attempting to construct a new diplomatic architecture to replace the collapsed JCPOA.

Brent vs. WTI — The Two Global Oil Benchmarks

Global crude oil prices are tracked through two primary benchmarks. Brent crude (named after the Brent oilfield in the North Sea) is the international benchmark for roughly two-thirds of globally traded crude, including Middle Eastern, African, and European crudes. West Texas Intermediate (WTI) is the US benchmark and tends to trade at a slight discount to Brent due to its landlocked delivery point at Cushing, Oklahoma.

India primarily imports crude priced against Brent (from the Gulf) and the Dubai/Oman benchmark (specific to Middle Eastern light crude)
A $1 change in Brent crude price changes India's annual oil import bill by approximately ₹6,000–7,000 crore
Prior to the Hormuz crisis, crude had been trading in the $70–75 range; the crisis pushed it to $90+
At $83/barrel post-deal announcement, markets are pricing in significant risk reduction but not full normalisation

Connection to this news: The 5% single-day price drop illustrates how acutely the market had been pricing the Hormuz risk premium — and how rapidly that premium deflates when a diplomatic resolution appears credible.

Key Facts & Data

Brent crude post-deal: ~$83.00/barrel (fell ~$4.33, nearly 5%)
WTI post-deal: ~$80.34/barrel (fell ~$4.54, 5.35%)
Both benchmarks at their lowest since 10 March 2026
Pre-crisis throughput at Hormuz: ~20 million barrels per day
US naval blockade on Iran: 13 April – 29 May 2026
MoU to be signed in Switzerland; Strait to reopen within 30 days under Iranian management
60-day ceasefire period for broader nuclear and security negotiations
Pakistan served as the key mediating party
Conflict began: 28 February 2026