No weapon has ever settled a moral problem. It can impose a solution but it cannot guarantee it to be a just one. You can wipe out your opponents. But if you do it unjustly you become eligible for being wiped out yourself.
I certainly know that if the war fails, the administration fails, and that I will be blamed for it, whether I deserve it or not. And I ought to be blamed, if I could do better. You think I could do better; therefore you blame me already. I think I could not do better; therefore I blame you for blaming me.