"A claim by President Ahmadinejad that Iran has 3,000 working uranium-enriching centrifuges sent a tremor across the world yesterday amid fears that Israel would respond by bombing the country’s nuclear facilities.
Military sources in Washington said that the existence of such a large number could be a “tipping point”, triggering an Israeli air strike. The Pentagon is reluctant to take military action against Iran, but officials say that Israel is a “different matter”. Amid the international uproar, British MPs who were to have toured the nuclear facility were backing out of their Iran trip.
Even before President Ahmadinejad’s announcement, a US defence official told The Times yesterday: “Israel could do something when they get to around 3,000 working centrifuges. The Pentagon is minded to wait a little longer.” US experts say 3,000 machines running for long periods could make enough enriched uranium for an atomic bomb within a year......."