Nuclear Weapons around the World
Posted: 20th June 2025
The world’s nine nuclear-armed states have amassed the equivalent of 145,000 Hiroshima bombs. Israel’s illegal attack upon Iran is purportedly a last-ditch attempt to prevent it joining this club – as Israel did long ago, though does not admit it. While Tehran possesses the capacity to develop a nuclear weapon if it chose to, US intelligence believes it has not made that decision – and would still need up to three years to build and deploy one. Israel does not appear to be striking Iran because US nuclear diplomacy has failed, but because it fears it might succeed. Many of its targets are unrelated to the nuclear programme, and some even to Iran’s military. Benjamin Netanyahu has repeatedly invoked regime change: more honestly, regime collapse. Few believe Israel can destroy Iran’s nuclear programme without the US. The Israeli prime minister seeks to bait Donald Trump into joining this assault: if he can’t get one of the peace deals he wants, how about taking a military triumph? Mr Trump’s shifting rhetoric has suggested he is being dragged along, to the alarm of Maga isolationists and others who recognise the folly of seeing an easy win. But he may still hope to threaten Iran into a deal. The bigger threat is nuclear proliferation globally. The remaining US-Russian nuclear arms control treaty, New Start, is due to lapse in February – leaving them without limits on their arsenals for the first time in half a century. Both are already pursuing extensive modernisation programmes. China is still far behind, but its armoury is growing fastest, at around 100 warheads a year. This month’s strategic defence review commits the UK to spending £15bn on new submarine-launched warheads and opens the door to the reintroduction of air-launched nuclear weapons. North Korea appears to be building a third uranium enrichment site. Taboos elsewhere are eroding, in an increasingly unstable world where impunity reigns. Support for an independent deterrent has soared in South Korea, no longer confident of the US umbrella.