The latest National Intelligence Estimate (NIE) report suggests that Iran has halted its nuclear weapons program in 2003 due to international pressure. You can view the pdf of the report here. This is in stark contrast to Bush, Cheney, other administration officials, and most of the GOP presidential candidates, all of which have been banging their fists screaming about stopping Iran from getting nuclear weapons.
Raw Story has a great article about Joseph Cirincione, the director of nuclear policy at the Center for American Progress, and his recent appearance on BBC World News. Cirincione basically says that military and intelligence agencies are finally standing up to the president and his propagandizing of the Iranian threat.
"And they of course are now dealing with a lame-duck president...and you're seeing first the military reassert the integrity of its institutions, and now the intelligence agencies," he continued. "So both are now saying 'go slow on Iran, there is no good military option here.' And now, there isn't really an imminent threat. We have time to let diplomacy work."
"It definitely undercuts the case for military action," said Cirincione. "It strengthens the case for direct diplomatic engagement."