Oil Plunges 7% as U.S.-Iran Ceasefire Proposal Collapses Four-Week Risk Premium
Brent crude sank below $97/bbl on 25 March following reports of a 15-point U.S. peace plan, erasing the geopolitical premium that had driven prices near $120 during the Strait of Hormuz crisis.
Oil prices collapsed as much as 7% on 25 March 2026 after reports emerged of a U.S.-brokered ceasefire proposal with Iran, with Brent crude falling to near $97/bbl and West Texas Intermediate approaching $87 in early trading.
The sharp reversal marks the unwinding of a four-week geopolitical risk premium that had accumulated since 28 February, when U.S.-Israeli strikes initiated Operation Epic Fury and effectively shut the Strait of Hormuz — a chokepoint carrying 20% of global oil supply. Brent had peaked near $120/bbl earlier in March, representing a 40% surge from levels around $71 one month prior, according to Ad-Hoc-News.
By midday on 25 March, Brent settled at $99.16/bbl (down 5.1%) while WTI closed at $88.41 (down 4.27%), per The National. The decline reflects immediate trader expectations that a diplomatic off-ramp has emerged, though the durability of any ceasefire remains uncertain.
The Ceasefire Proposal
The 15-point plan, delivered via Pakistan and reported by Israeli Channel 12, proposes a 30-day cessation of hostilities to negotiate Iran’s nuclear disarmament. Key terms include dismantling three major enrichment facilities at Natanz, Isfahan, and Fordow; abandoning proxy networks in Yemen, Lebanon, and Iraq; and reopening the Strait of Hormuz to commercial shipping, according to Al Jazeera. In exchange, the U.S. would lift sanctions and restore economic normalisation.
President Donald Trump signaled optimism in remarks to reporters: “They’re talking to us, and they’re talking sense,” per CNBC. However, Iranian officials publicly denied direct negotiations. “Have your internal conflicts reached the point where you are negotiating with yourselves?” asked Lt. Col. Ebrahim Zolfaghari, an Iranian military spokesperson, in comments carried by Time.
Iran’s counter-demands set a far higher bar: closure of all U.S. military bases in the Gulf, reparations for strike damage, sovereign rights to levy tolls on Hormuz traffic, and retention of ballistic missile capabilities. Foreign Ministry spokesperson Esmail Baghaei dismissed U.S. overtures, noting “a very catastrophic experience with U.S. diplomacy.”
“The market outlook remains tight notwithstanding the prospects of a war off-ramp. Even if flows through the strait resume, it’s not clear all shut-in production will resume until there is more clarity on the durability of a ceasefire.”
— Saul Kavonic, Head of Energy Research, MST Marquee
Supply Shock Arithmetic
The four-week Strait of Hormuz disruption represents the largest oil supply shock in recorded history. The strait normally carries approximately 20 million barrels per day — roughly one-fifth of global oil trade — and its effective closure since 28 February severed critical flows from Saudi Arabia, the UAE, Kuwait, and Iraq to Asian and European markets.
Gulf producers have lost $15.1 billion in energy revenue since the conflict began, with at least $10.7 billion in cargo loads stranded in the strait, according to shipping analytics firm Kpler via The National. U.S. gasoline prices averaged $3.98/gallon on 25 March (a 34% increase from pre-crisis levels), while diesel reached $5.35 (up 42%).
Goldman Sachs estimated an $18/bbl geopolitical risk premium embedded in oil prices as of early March, per CNBC. That premium is now compressing rapidly, though analysts warn the market remains structurally tight even if diplomatic progress continues.
Inflation and Macro Reverberations
The swift collapse in crude prices offers immediate relief to central banks wrestling with Inflation trajectories. The four-week spike had threatened to derail disinflation progress across major economies, particularly in the U.S. and Europe where gasoline and diesel feed directly into consumer price indices.
However, the repricing also exposes the fragility of recent commodity gains. Energy analysts at TD Securities, Enverus, and Macquarie had forecast sustained $110-$115 Brent pricing through Q2 2026 under a prolonged Hormuz closure scenario, according to Ad-Hoc-News. Those forecasts now require substantial revision if ceasefire talks gain momentum.
Volatility compression extends beyond energy. Equity markets rallied on 25 March as inflation hedges unwound and risk-on sentiment returned. The VIX volatility index fell 8% while inflation-linked bond yields tightened, reflecting trader confidence that a diplomatic resolution could stabilize both energy markets and broader macroeconomic conditions.
The Strait of Hormuz crisis began when Operation Epic Fury targeted Iran’s Supreme Leader and triggered retaliatory closures of the strait. The resulting supply shock exceeded historical precedents — larger than the 1973 Arab oil embargo, the 1979 Iranian Revolution, or the 1990 Gulf War. At 20 million barrels per day, the strait’s closure removed more crude from global markets than OPEC’s entire spare production capacity could replace.
Durability Questions
Despite the dramatic price reversal, significant uncertainty remains over whether shut-in production will return quickly even if a ceasefire holds. “It’s not clear all shut-in production will resume until there is more clarity on the durability of a ceasefire,” noted Saul Kavonic, head of energy research at MST Marquee, in comments to Global Banking and Finance.
Iranian public denials of direct talks introduce additional ambiguity. While the Trump administration has characterised Iran as engaging constructively, Tehran’s official position remains one of rejection. The gap between reported back-channel diplomacy and public rhetoric suggests either a deliberate negotiating posture or genuine domestic political constraints on Iran’s leadership.
Physical oil markets also face logistical realities. Even if the strait reopens fully, tankers must be repositioned, insurance coverage restored, and supply chains reactivated — a process that could take weeks. Meanwhile, some Gulf producers may hesitate to ramp production without confidence that ceasefire terms will hold beyond the proposed 30-day window.
What to Watch
The next 48 hours will determine whether the 25 March price collapse represents a durable shift or premature optimism. Key indicators include any official confirmation of direct U.S.-Iran talks, movement on the 30-day ceasefire timeline, and Iranian signals regarding Hormuz reopening. Brent’s ability to hold above $95/bbl will test whether the market believes the diplomatic track has genuine momentum or remains theatrical positioning.
On the supply side, watch for announcements from Saudi Aramco, ADNOC, or Kuwait Petroleum regarding production restart timelines. Any delay in physical flows would quickly reprice crude higher even if diplomatic progress continues. U.S. gasoline inventory data in the week of 31 March will offer early evidence of whether refinery runs are increasing in anticipation of renewed crude access.
Finally, monitor Iranian domestic politics. Supreme Leader succession remains unresolved following Ali Khamenei’s death on 28 February, and internal factions may view ceasefire negotiations as either pragmatic necessity or unacceptable capitulation. Any hardline backlash within Tehran could collapse the diplomatic track as quickly as it emerged, sending oil prices surging back toward their March highs.