Quote Originally Posted by Xiahou View Post
We were training/advising/arming Syrian rebels. Publicly, we weren't assisting the real extremists- only the moderate extremists, but there's little doubt that weapons we provided and personnel we trained in Syria are fighting for ISIS.

It's not very realistic to think you're going to arm these rebels and not those rebels, when they're all essentially fighting on the same side.
Stalin managed to arm just one faction of an alliance just fine.