[legion]

How did we know Hitler was going to be so bad? Everyone was sure he was going to stop after annexing Czechoslovakia, after invading Poland, etc. He even said so himself. Instead, we waited until it was almost too late to get involved.

This lead to a period for the next 60 years where we quickly involved ourselves with every potential bad guy before they got too big. Then that was decried for being "imperialist" and we've got some baddies in NK and Iran we won't do anything about because we don't yet know they will really be bad...