Has it? Or has it saved millions of lives? If we didn't stop the Chinese or Soviets and they had their way how many more hundreds of millions of their own people would they allow to die? Consider how many of their own people the Chinese Russians Cubans N Koreans and Cambodians killed and starved in the last century and how America prevented that ideology from spreading. Consider how many people were killed in war before America became a superpower and how many have been killed after, the rate of deaths in war these days is a fraction of what it used to be. Same with famine deaths.