American air strikes on Iran enter fifth day as Trump vows escalation

The United States has entered a fifth consecutive day of military strikes against Iran, marking a dramatic resurgence of hostilities that threatens to unravel the fragile intermediate truce brokered only a month ago between Washington and Tehran. President Donald Trump, speaking in an interview with Fox News, issued an explicit warning that the bombardment would intensify until Iran ceased its attacks on shipping in the Strait of Hormuz and restored unimpeded passage through the vital waterway, through which Saudi Arabia, Qatar and the United Arab Emirates channel the majority of their energy exports. The resumption of American military action, which follows the collapse of the short-lived ceasefire, has propelled the price of Brent crude beyond $85.50 a barrel, representing a weekly gain of some 13 per cent, as markets priced in the growing likelihood of sustained disruption to Gulf supplies.

The underlying dispute, it is understood, centres on competing claims to control over the strait itself, with Iran having initiated a campaign of interdiction against vessels transiting without its authorisation, prompting Mr Trump to revoke sanctions waivers on Iranian oil, reimpose a naval blockade on Iranian ports, and ultimately authorise air strikes. According to data cited by Bloomberg, the current wave of attacks has been directed primarily at military installations in southern Iran, including radar arrays, missile batteries and drone positions, and remains less intensive than the full-scale campaign witnessed during the peak of hostilities in March and early April. Yet the president made clear that this restraint was temporary, telling Fox News that the coming week would bring far greater suffering for the Iranian regime as American bombers turned their attention to power stations, with energy infrastructure and bridges reserved as the final bargaining chip should Tehran continue to refuse to return to the negotiating table.

The Islamic Revolutionary Guard Corps (IRGC), for its part, has responded with defiance, declaring that the strait would remain closed for as long as American strikes and the naval blockade persisted. Iranian authorities have alleged that American bombs have killed more than 30 civilians in recent days, while the country's military reported seven fatalities from a strike on a barracks in the south-east. The rhetorical escalation on both sides has done little to assuage concerns in global energy markets, where analysts are increasingly contemplating a scenario in which the current confrontation spirals into a protracted blockade with far-reaching consequences for the world economy. Goldman Sachs, whose assessment was relayed by Reuters, has estimated that Gulf exports, having recovered to 80 per cent of their pre-war levels following the June truce, have slumped once again to below 50 per cent over the past week. Should this recovery fail to materialise, the bank has warned, Brent could climb above $110 a barrel in the fourth quarter.

Complicating the picture still further is the IRGC's threat to close "all other export corridors", a formulation widely interpreted by analysts as a signal of readiness to activate allied Houthi forces in Yemen to seal the Bab el-Mandeb strait at the mouth of the Red Sea. Saudi Arabia has thus far managed to offset the closure of Hormuz by redirecting more than 70 per cent of its exports to the Red Sea port of Yanbu, where capacity utilisation is now said to be approaching its maximum. The simultaneous closure of both chokepoints, however, would place the world's two most critical energy arteries under immediate threat, a prospect that traders and policymakers alike are watching with mounting alarm.