May 18, 2008: Iran, Cuba, Venezuela, these countries are tiny compared to the Soviet Union. They don't pose a serious threat to us. ...they spend 1/100th of what we spend on the military. I mean, if Iran ever tried to pose a serious threat to us, they wouldn't stand a chance.
May 20, 2008: Iran is a grave threat. It has an illicit nuclear program. It supports terrorism across the regions and militias in Iraq. It threatens Israel's existence. It denies the Holocaust.
Source for these genuine Obama quotes: NewsBusters.org:
http://newsbusters.org/blogs/brad-wilmouth/2008/05/23/fnc-shows-obamas-iran-flip-flop-colmes-might-talk-hitler