Oil Markets React to Strait of Hormuz Closure
Brent crude hit $82 per barrel Monday morning — a 14-month high — after the U.S.-Israel military campaign against Iran effectively closed the Strait of Hormuz, one of the world's most critical energy arteries. West Texas Intermediate futures traded at $72.52, jumping over 8% as tankers stopped crossing the strait and hampering roughly a fifth of global LNG supply. Australian gas exporters surged on the news, while aluminum climbed on fears of supply disruptions from Middle Eastern producers.
The market chaos followed Saturday's joint U.S.-Israel strikes that killed Iran's Supreme Leader Ayatollah Ali Khamenei, who had ruled since 1989. Trump told Fox News that 48 Iranian leaders were eliminated in what he called a regime change operation. "Nobody can believe the success we're having, 48 leaders are gone in one shot," Trump said Sunday. The strikes also killed former president Mahmoud Ahmadinejad. Trump warned combat operations would continue "until all of our objectives are achieved," while offering full immunity to Revolutionary Guard members who surrender their weapons.
Regional Conflict Spreads to Lebanon
The conflict expanded beyond Iran's borders when Hezbollah launched missiles and drones at Israel from Lebanon on Sunday in retaliation for Khamenei's killing. The Israeli Defense Forces responded with strikes across Lebanon, including in Beirut. "Following the sirens that sounded in several areas in northern Israel, a projectile that crossed from Lebanon into Israeli territory was intercepted by the Israeli Air Force, and several projectiles fell in open areas," the IDF said in a statement. A suspected drone strike also hit RAF Akrotiri, a UK military base in Cyprus, though no casualties were reported. The base incident came hours after the UK allowed U.S. strikes on Iranian missile sites from British territory.
Market Positioning on Regime Change
Prediction markets are pricing in a 22% chance that Reza Pahlavi — son of the last Shah of Iran — leads the country by the end of 2026, according to Polymarket. As @Polymarket noted, "22% chance the Reza Pahlavi leads Iran at the end of 2026." Separately, traders give a 31% probability that Iran withdraws from the Nuclear Non-Proliferation Treaty in the conflict's aftermath. Trump indicated Sunday that Iran's new interim leadership has already reached out to him, though he offered competing visions of what a post-regime government might look like. In one interview, he suggested the military should "simply surrender their weapons to the Iranian public."
Economic Ripple Effects Across Asia-Pacific
The energy shock is already reshaping economic calculations. Julius Baer's Mark Matthews called the potential impact on oil flows "huge," while Monex Group's Jesper Koll warned that rising prices risk delivering a fresh inflation shock to Japan, complicating Prime Minister Sanae Takaichi's efforts to ease cost-of-living pressures. Asian airline stocks dropped Monday while energy shares rallied. In Australia, politicians debated fuel security after the country was left with only two oil refineries. "People have got to start looking at what the effects are for Australia, not just the Middle East, and you can start looking for those effects at a petrol pump near you," One Nation MP Barnaby Joyce said on Sunrise.
What to Watch
The key variable for sustained oil prices is whether Iran can reopen the Strait of Hormuz — and whether Trump's regime change operation succeeds without triggering a wider regional war. Former U.S. Energy Secretary Ernest Moniz flagged the risk of Iranian nuclear material being used offensively during the chaos. Bitcoin traders are weighing elevated oil prices against a rising gold price as safe-haven flows accelerate. Iran's soccer federation president said he doesn't know if the national team can play World Cup matches in the United States, a minor but telling signal of how thoroughly the conflict has upended normal diplomatic channels. Congressional opponents of the strikes are planning to challenge Trump's war authority this week, though the legal path to ending a presidential military operation remains unclear.
