WASHINGTON — The collapse of the ceasefire has set in motion a chain of events that could soon touch the daily lives of millions across Asia, from the cost of cooking gas to the price of diesel. When President Donald Trump declared the ceasefire “over” on March 30, 2025, he reopened a geopolitical fault line that runs straight through the global oil market. The immediate threat is the possible reimposition of US sanctions on Iranian oil exports.
If Washington follows through, analysts estimate that 1.5 million barrels per day could be pulled from global supply. That is a significant chunk of a market where the International Energy Agency projects total 2025 demand at 102 million barrels per day.
A supply cut of that magnitude would push global prices to an estimated $90 to $100 per barrel, according to the Peterson Institute for International Economics. For communities across Southeast Asia, where fuel costs already eat up a large share of household income, that price range is not abstract. A sustained rise toward $100 per barrel would mean higher fares on jeepneys and buses, more expensive electricity from oil-fired plants, and costlier imports.
The diplomatic dead end
The United Nations Security Council held an emergency session on March 31, 2025, to address the crisis. But no resolution passed. Russia and China threatened vetoes, blocking any collective international response.
That left the US and its allies with unilateral tools — and the most powerful one is the reimposition of oil sanctions on Iran. Iran’s Foreign Minister Abbas Araghchi has called for new negotiations, but Trump has ruled out talks entirely.
That stance, combined with the collapse of the ceasefire, leaves little room for a diplomatic off-ramp in the near term. The Peterson Institute assigns only a 10% probability of military conflict, a 40% probability of renewed sanctions, and a 50% probability of a new ceasefire within six months. But those odds are based on a fluid situation, and the 40% chance of renewed sanctions carries the most immediate economic consequence for ordinary people.
Nuclear escalation
Complicating the picture is Iran’s nuclear program. The International Atomic Energy Agency reported on March 29, 2025, that Iran had increased uranium enrichment to 60% purity, approaching the 90% threshold considered weapons-grade. That report came just one day before Trump declared the ceasefire over.
The proximity of these events underscores how quickly the security situation in the Persian Gulf has deteriorated. The United States has deployed the USS Dwight D.
Eisenhower carrier group to the Persian Gulf. That is a significant naval presence, and it signals that Washington is preparing for the possibility of confrontation. For Asian economies that rely on the free flow of oil through the Strait of Hormuz, any disruption in that waterway would have immediate and severe consequences.
OPEC+ holds the cards
OPEC+ members, led by Saudi Arabia and Russia, collectively hold spare production capacity of about 4 million barrels per day. In theory, that spare capacity could compensate for the loss of Iranian oil. But Saudi Arabia has signaled that it may not increase production to offset Iranian losses.
That is a crucial detail. If Riyadh chooses not to act, the market will tighten, and prices will rise.
Russia, meanwhile, is both a member of OPEC+ and a party to the diplomatic standoff at the UN Security Council. Moscow has its own geopolitical reasons for not wanting to see Iranian oil replaced by Saudi barrels. For Asian importers, the risk is that OPEC+ spare capacity exists on paper but is not actually deployed.
The 4 million barrels per day figure is a theoretical ceiling, not a guarantee.
The road ahead
The situation remains fluid. The US has not yet reimposed sanctions, and the 1.5 million barrels per day figure is a projection, not a certainty. But the pieces are in place.
The ceasefire is over. Iran is enriching uranium at 60%.
The carrier group is in the Gulf. And OPEC+ is not rushing to fill any gap. For communities across Asia, the next few months will be telling.
If sanctions are reimposed, the price at the pump will rise. If a new ceasefire emerges, the immediate threat recedes.
But the 50% probability assigned to that outcome by the Peterson Institute is hardly a guarantee.
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