Iran president admits nuclear worm
Iran's president has confirmed for the first time that a computer worm has affected centrifuges in the country's uranium enrichment programme.
Iran has previously denied the Stuxnet worm, which experts say is calibrated to destroy centrifuges, had caused any damage, saying they uncovered it before it could have any effect.
But President Mahmoud Ahmadinejad said it "managed to create problems for a limited number of our centrifuges".
At a press conference in Tehran, he said the problems were resolved.
Earlier in November, UN inspectors found Iran's enrichment programme temporarily shut down, according to a recent report by the UN nuclear watchdog.
The extent and cause of the shutdown were not known, but speculation fell on Stuxnet.