On the other hand: Lots of people protested the Iraq war. Lots of governments in the west did not participate in the coalition of the willing and protested (I know Germany under Chancellor Schröder did). Should we have done more against it? Probably. I still would justify it with it being a 9/11 aftermath thing, where the USA was on a rampage to get revenge and at the same time being absolutely unchallenged 10 years after the end of the cold war. They couldn't have been stopped by anyone.
And any sensible and rational being with non-zero knowledge of Iraq and Saddam's transgressions against humanity should support the Iraq war which was all about toppling him. Since you're clearly not one of those, here's some homework to get you started: Halabja massacre, Kuwait invasion.
Those events you mention are also a full 13 years before the war in Iraq started, why the delay, why end the gulf war? If my memory recalls, there was a lot of noise around WMDs at the time and questionable evidence for justification.
Also, chemical weapons are WMDs - something Saddam had and used. More homework for you: Operation Opera. Left alone, this guy would be a more psychotic ME DPRK. It's hard to imagine that DPRK itself doesn't come close to Iraq under Saddam.
Ukraine is not an exception.