You can wonder all you want it will not evade the reality that a murderous lot claiming to be Muslims on the ground that will be exterminated. You are making excuses for them
Since you asked, Iraq was invaded on false information but that invasion was coming regardless. Saddam was in gross threat violation with his gassing of the Kurds. That alone should have had troops to Baghdad.
You are all over. So was Saddam the only leader that was in violation to a minority in a country?