This was not a selfless act to fight against tyranny, as you make it out to be, Lend-Lease brought benefit to the US, they were making profit from a war they refused to take part in.
You failed to notice my sarcasm here, of course the Soviets were selfish and aimed to conquer parts of Eastern Europe. My point is, America is no better, no nations are really. Even Britain and France only declared war because they were fearful of Germany's increasing power.
What about China, Russia and North Korea? I don't seem to recall America "liberating" them, oh that's right, they're too powerful and there's no easy way the US can screw their country up. Korea was split up due to the allies in the first place due to the aftermath of WWII, it was in America's own interest to prevent the North from conquering them. The same applies for all the countries you listed, it was all part of the feud between the USSR and the USA, not because America wanted to protect those countries at all.
It's funny that you should mention Afghanistan, the very country that our nations are fighting against at this moment; America provided them with plenty of weapons to shoot the Soviets with, they're probably using the same weapons to shoot back at their suppliers now.
Germany was weak because of the Treaty of Versailles, put upon them by the Allies. That is why the Nazis came to power, even then nobody retaliated because they didn't care until after they started becoming too powerful and conquering neighbouring nations.
Killing helps keep the peace? What. Of course peace arrives after everything's been destroyed and thousands have been killed, because there's nothing left to fight for. You seem to be forgetting the definition of the word 'world' in this case.
The Taliban only came to power because America failed to aid Afghanistan in the aftermath of the Soviet-Afghan war, once the war was over and the Soviets had withdrawn there was nothing to gain by continuing to interfer in Afghanistan's matters, so they were left to fight amongst themselves.
The military causes just as many problems if not more than the amount it solves.
I'm not a pacifist and I realise that war is sometimes inevitable, but you're trying to claim that war brings good to the world, and that America is on a mission to save the world by killing "barbarians" whilst aiding and saving the innocent in an act of complete selflessness, which is entirely untrue.
