I vehemently disagree with the (second) invasion of Iraq, but pretending it's the same to step in when some dictator has torture as a favorite hobby as it is to invade a peaceful and happy democracy is taking the cynicism a bit too far. Afghanistan & the 1990 Iraqi war were entirely legitimate for obvious reasons.
Aehm, no! Afghanistan was a reaction to 9/11, since the ruling Taliban had been accomodating and supporting Al Quaeda. The first (or second, depending on how you're counting) Gulf War started with Saddam Hussein's invasion of Kuwait.