Who's at risk?

I believe as the strongest country in the world military wise, it is a duty of ours to assist allies in need of our help. To allow countries like these to go through poverty, rape, genocides, famine etc. when we have the ability to help them is a horrible thing to do. Not only would this be a horrible thing to do morally, but think of it like Europe when Hitler began to invade countries without opposition, a large enough buildup of takeovers could result in mass takeovers and another world war.

However, I do also believe countries that do not choose to ally us and agree to help us if a similar occasion occurs do not deserve help, as risking our troops for people that don't appreciate us is not worth it to us. That would be like the Jews training Hitler's men to fight. Why would we help you if you openly hate us?