Evidence of what? The American people are safe and sound and the interests of America are still protected, and very few countries even think about threatening us here, thanks to a strong military force.
Those ares you mentioned would be better off if they had a strong military to keep order and protect their citizens.
So don't go with feelings, go with facts.
Any real reading into the US' military and intelligence operations in South America, Africa and the Middle East should be all the evidence you need.