France and the United Kingdom will convene a conference this week to launch a multinational mission aimed at reopening the Strait of Hormuz to commercial shipping, sidelining both the United States and Iran after six weeks of war-driven paralysis. President Emmanuel Macron announced the plan on Monday, hours after U.S. President Donald Trump ordered the Navy to begin blockading Iranian ports and declared that "Other Countries will be involved," without naming them.
Traffic through the 21-mile-wide waterway, which carries roughly a fifth of the world's oil and gas, has been frozen since U.S.-Israeli strikes on Iran began more than six weeks ago. Weekend cease-fire talks in Pakistan collapsed, prompting Trump's blockade order, which took effect Monday afternoon. Macron said the Franco-British initiative would be "strictly defensive" and "separate from the warring parties," with deployment "as soon as circumstances permit."
Prime Minister Keir Starmer confirmed London's participation, noting that Britain had already gathered more than 40 like-minded states at an April 2 meeting from which Washington was excluded. "The ongoing closure of the Strait of Hormuz is deeply damaging. Getting global shipping moving is vital to ease cost-of-living pressures," Starmer wrote on social media.
Arsenio Dominguez, head of the UN maritime agency, told reporters that no nation has the legal right to obstruct passage through an international strait and warned that Iran's reported practice of charging select vessels for coastal-route access sets "a very dangerous precedent." He predicted Trump's additional blockade would have "negligible" practical impact, given that only a trickle of vetted ships has been moving anyway, and urged rapid de-escalation to avert "a major crisis."
Europe's two remaining military powers are quietly building a naval coalition that pointedly locks out Washington, a maneuver that would have been unthinkable in previous Gulf crises. By framing the mission as "defensive" and "separate from the warring parties," Macron and Starmer are not just protecting tankers—they are protecting multilateralism from an American president who treats naval chokepoints as extensions of his Twitter feed.
The bigger picture is a rapidly accelerating fragmentation of the post-1945 security order. When the guarantor of freedom of navigation becomes the party blockading ports, allies stop asking permission and start building parallel architectures. Expect more mini-coalitions—Asian, African, Latin—to copy this template the next time great-power rivalry paralyses the UN Security Council.
For Nigeria, the stakes are immediate: every week the strait stays shut adds roughly $3–$4 to the price of imported petrol at the pump, because 40 per cent of the nation's gasoline still arrives via European refineries that rely on Gulf crude. A sustained spike would force the Dangote refinery to divert more of its output to the domestic market, trimming the export dollars the government is counting on to shore up naira stability.
Watch whether the Franco-British force offers safe-convoy escorts to non-European flag carriers; if Lagos-registered tankers are included, Abuja could gain a back-channel route that bypasses both U.S. and Iranian red tape, shaving critical days off delivery times and cushioning next month's fuel subsidy negotiations.
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