Again, they did that.
Saddam Husein kicked out the UN weapons inspectors. Saddam did that. We were patient with Saddam for over a decade. We gave them endless chances to simply open up... let UN inspectors have free access, and prove they destroyed their WMDs and dismantled their production facilities.
Saddam refused. Now, you can say Saddam really did dismantle their WMD programs with 20/20 hind sight. Great. But the people at that time, did not have 20/20 hind sight. All we knew was, Saddam was repeatedly denying the UN inspectors access to their military facilities, and then expelled them.
Why would Saddam do that, if he had complied with all the demands?
So we logically, and nearly every intelligence agency around the world agreed... thought that he was still running WMD programs.
So, everything that happened there, is on their hands. Those children that died... their fault. Period.