Didn't Don Corleone say something about keeping your friends close and your enemies closer? Politics and diplomacy are at work here.I think we should stop foreign aid to all countries.
Do you think the USA would not be such a huge target for terrorism if we took the path I outlined in the op? The nations that don't sufffer from a terrorism problem are generally the ones that stay in their borders and don't constantly interfere with other nations. It would make this disappear: