US warns of Iran's 'breakout' capability as nuclear talks start
United States said on Tuesday Iran has the ability to produce fissile material for a nuclear bomb in two months, if it so decided, as Tehran and six world powers swung into a new round of talks in Vienna on resolving their atomic dispute.
"I think it's public knowledge today that we're operating with a time period for a so-called 'break-out' of about two months. That's been in the public domain," said US Secretary of State John Kerry to a Senate hearing.
