The world’s most strategically important oil shipping lane remains effectively closed as allied nations stop short of committing warships to patrol the Strait of Hormuz, despite direct appeals from President Trump. In successive posts on Truth Social, Trump urged governments in Europe and Asia — including the UK, France, China, Japan, and South Korea — to contribute naval support to a coalition effort alongside American forces. So far, the reaction from those governments has ranged from cautious deliberation to outright refusal.
Iran sealed the strait following US and Israeli airstrikes, triggering what experts describe as the most severe oil supply disruption in history. Tehran has threatened to immediately destroy any tanker bound for the US, Israel, or their allies, declaring such vessels legitimate military targets. Sixteen ships have been attacked since the war began at the end of February, and Iran has raised the prospect of mining the waterway — turning the world’s busiest oil route into one of its most dangerous passages.
The French government made the most definitive statement among potential coalition partners. Defence Minister Catherine Vautrin said France was maintaining a purely defensive posture and ruled out sending any warships to the strait. President Macron had previously described plans for a defensive escort mission, but only once the most intense phase of fighting subsided. The UK confirmed it was in discussions about various options including mine-hunting drones but made no concrete pledges. The EU’s Aspides naval mission — involving ships from France, Italy, and Greece — was floated as a potential framework for expansion to the Persian Gulf, but Germany’s foreign minister questioned its effectiveness.
Japan and South Korea, both deeply vulnerable to oil supply shocks, have responded with measured caution. A senior Japanese politician acknowledged that the law did not necessarily prohibit naval deployment but described the threshold as extremely high in practice. South Korea’s foreign ministry said it was reviewing the situation and exploring various measures to protect its citizens and energy supply routes. Neither country has moved toward concrete military action. Oil prices continue to climb, and the economic damage from the blockade grows daily.
China’s response has been measured and diplomatically framed, with no mention of military involvement. Beijing is navigating competing pressures: it is an Iranian ally, yet also a major importer of Gulf oil. The Chinese embassy said it would strengthen communication with relevant regional parties and play a constructive role in restoring peace. US Energy Secretary Chris Wright indicated he had engaged in dialogue with relevant nations and expected China to act as a constructive partner, while noting that roughly one-fifth of global oil exports normally transit the strait.