Iran is within months of being able to make the core of a nuclear warhead, according to the latest information from the the UN nuclear agency.
In its report, the IAEA said Iran was ready within days to ramp up its production of 20pc enriched uranium at its plant at Fordo using 700 more centrifuges.
That would double Iran's present output and cut in half the time it would take to acquire enough of the substance needed to make a nuclear weapon.
Iran says it has no interest in making nuclear arms, just nuclear power for its citizens, but the US and other nations believe otherwise.
Iran refuses to give up enrichment despite international sanctions and offers of reactor fuel from abroad and for years has stalemated an IAEA probe of suspicions that it worked secretly on developing such arms.