The main problem is what everyone believes war to be. If a foreign military attacked the U.S., would you believe the foreign invaders were not guilty of murdering the Americans who took up arms against them?
The utter absurdity of the Iraq War is believing that the U.S. government killed people in Iraq in a legal and non-murderous way and that only Blackwater security guard Nicholas Slatten was guilty of murdering people in Iraq. I’m not saying U.S. soldiers are guilty of murder; those in Washington, D.C., who put the war in motion are the ones guilty of murder.
We need to address what most of us believe war can be — that all a war starter needs to do to get the freedom to kill people is provoke them to take up arms and defend themselves. Then the aggression has gotten them, gotten them into war.