You have hit on the seminal point of the last century. The peace movement killed more folks by preventing victory in several wars.
I am researching a book about this very theme, the numbers killed after the peace movement intervened is staggering.
RW
In my opinion, part of the problem is the fact that we don't fight wars as a nation any more. There have always been those opposed to war but they didn't have the time to march in the streets because we used to have a massive industry to support our wars.