A breakthrough conditional two-week ceasefire agreement between the United States and Iran has sent shockwaves through global energy and financial markets, with the key Strait of Hormuz waterway set to reopen to unimpeded commercial passage. The diplomatic breakthrough, announced this week, has driven a dramatic single-day decline in benchmark global oil prices and sparked widespread gains across international stock exchanges.
Following the confirmation of the deal, international benchmark Brent crude plummeted nearly 16% to settle at $92.30 per barrel, while West Texas Intermediate, the U.S. traded oil benchmark, fell 16.5% to $93.80 per barrel. Even with this sharp correction, prices remain well above pre-conflict levels: in late February, before escalating tensions between the two nations disrupted Gulf energy supplies, Brent traded at roughly $70 per barrel.
The disruption to energy flows began after Iran threatened to block all commercial shipping through the Strait of Hormuz, a chokepoint through which roughly 20% of the world’s daily oil supplies pass, in retaliation for U.S. and Israeli airstrikes on Iranian targets. The threat sent oil and gas prices soaring across global markets, as supply fears gripped investors and energy importers.
Market reaction to the ceasefire announcement was overwhelmingly positive in early Asian trading on Wednesday. Japan’s Nikkei 225 index surged 4.5%, while South Korea’s Kospi Index jumped 5.5% in morning session trading. Hong Kong’s Hang Seng Index gained 2.8%, and Australia’s ASX 200 added 2.5% to close out the trading day. U.S. stock futures also pointed to a strong opening rally for Wall Street, with futures contracts indicating broad upward momentum ahead of the official market open.
The deal emerged after U.S. President Donald Trump outlined terms via a social media post Tuesday evening, confirming he had agreed to a 14-day suspension of all U.S. bombing and offensive operations against Iran, contingent on Iran’s commitment to fully, immediately and safely reopen the Strait of Hormuz. Trump had issued a hard deadline of 20:00 EDT Tuesday, warning that “a whole civilisation will die tonight” if no agreement was reached. Iranian Foreign Minister Abbas Araghchi quickly confirmed Tehran’s acceptance of the terms, stating Iran would uphold the ceasefire so long as attacks on Iranian territory halted, and that safe passage for commercial vessels through the strait would be guaranteed during the truce.
Market analysts note that political considerations likely pushed both sides toward a temporary truce. Xavier Smith, senior market analyst at research firm AlphaSense, observed that President Trump had strong incentives to avoid further escalation that would send energy prices skyrocketing. A sharp sustained rise in energy costs would amount to a “self-inflicted economic wound” that would damage Trump’s approval ratings ahead of key political deadlines, Smith explained, making escalation a risk few leaders would be willing to take.
Saul Kavonic, energy analyst at investment firm MST Marquee, noted that the ceasefire will allow dozens of stranded oil tankers waiting near the strait to begin transiting the waterway in the coming weeks, which will deliver much needed relief to tight global energy markets. Even during the height of tensions, a small number of commercial vessels continued to pass through the strait, with a number of Asian nations including India, Malaysia, the Philippines and China securing individual safe passage agreements for their flagged ships in recent weeks.
Despite the near-term market relief, Kavonic warned that a full return to pre-conflict energy production levels is unlikely until a permanent lasting peace agreement is reached. Additionally, damage to energy infrastructure across the region sustained during the conflict could take months to repair, delaying a full rebound in production and export volumes.
Asian economies have borne the brunt of the conflict’s economic fallout, as most major Asian economies are heavily dependent on Gulf oil imports. Governments and private sector firms across the region have rolled out emergency measures in recent weeks to address skyrocketing energy prices and widespread fuel shortages. The Philippines, which imports 98% of its total oil supply from the Middle East, became the first nation to declare a national energy emergency in late March after retail petrol prices more than doubled. Multiple regional airlines have already implemented fare increases and cut route capacity to offset surging jet fuel prices.
Ichiro Kutani, a senior researcher at Japan’s Institute of Energy Economics, explained that developing Asian economies have faced disproportionate harm from the conflict, as many lack domestic refining capacity and sufficient strategic oil reserves to buffer supply shocks. “The ceasefire is good news for Asian countries. If it holds, oil prices will return to normal states, though this will take time,” Kutani noted.