Can I also just add that I'm pretty sure that when Kerry said this:
“You know, education, if you make the most of it, you study hard, you do your homework and you make an effort to be smart, you can do well. If you don’t, you get stuck in Iraq.”
He was talking about President Bush, not US Troops. This becomes clearer when you see that it comes at the end of a string of anti-Bush jokes.