A) Irrelevant. When you take out a dictator, you can't just leave. I had a lot more problems with our exit plan, which apparently didn't exist, than our initial involvement.
B) When you sign up, you say "I'll do as I'm told." Plain and simple. If you want to keep them as safe as possible, keep them in America. Behind big walls with no guns inside because, as you know, military bases aren't the safest places on earth.