Why didn't...

...the United Nations "work" as was stated in its charter? After all, if all the nations of the world were working together to prevent the next Hitler from victimizing the world, how could they fail?

The answer, of course, is that a man more brutal than Hitler already held veto power in the Security Council, and it's arguable that the U.N.'s founders intended this; 14 of 17 have been found to have been Communist Party members at the time they wrote the U.N. Charter. Despite the rhetoric of the U.N. Charter and the promises made when that charter was approved as a treaty, it turns out to have been virtually designed to enable dictators to take advantage of their neighbors at will.