Before and During WWII...
Only 10% of the German population were card carrying NAZI Party members.
This is the reason Hitler sent Germany's Military traipsing across Europe and into Russia. Yes, Germany needed resources to fuel its economic recovery. And Yes; Hitler needed freshly conquered people to join his cause...

But mostly, Hitler needed to get his military so busy fighting on different fronts that his SS (DOJ), Gestapo (NSA), etc... Could run roughshod over the German people, unchallenged.

So when you puzzle over our involvement in so many regional conflicts. Remember the fact that Hitler and now obama NEED(ED) war to tie up the Homeland's Military to prevent them from interfering with his plans.

This is why Germany fell so easily once the Allied Forces punched through German military lines. There was no one left to defend the Fatherland. They were all 1,000's of miles away in Africa, Russia, France, etc, etc..