Wars are failures. A primary purpose of sensible foreign policy is to stop them. When wars happen, our foreign policy has failed. That isn't to say there's never a point when they're necessary or justified, but that point is simply an acknowledgment that the people in charge failed.This is a point that the Talking Head Corps seems to be unable to grasp. Supporting a war isn't courageous. Actually fighting in a war probably is courageous, but getting on television and gushing about the necessity of a war is not brave.
To quote Issac Asimov, "Violence is the last resort of the incompetent."