US Intelligence doesn't believe Iran has a nuclear weapon in development

Press TV - US intel confirms Iran not developing nukes

The National Intelligence Estimate in 2007 stated that Iran was not pursuing a nuclear weapons program. (An NIE is the most comprehensive intelligence pronouncement the US has.) Intelligence officials said recently that this estimate hasn't changed, in agreement with UN inspectors. At most, Iran is developing a nuclear power network that keeps the option of nuclear weapons open, but there isn't evidence it has enough fissile material for a weapon until 2013.