NATO was constructed on the - with the reason, whether one believes it or not, that it was going to defend Western Europe from Russian assault. Once the Berlin Wall fell and the Soviet Union was beginning to collapse, that reason was gone. So, first question: why does NATO exist?
In 1949, China declared independence - an event known in Western discourse as 'the loss of China' in the U.S. - with bitter recriminations and conflict over who was responsible for that loss.
Colombia has been the leading western recipient of U.S. arms and training as violence has grown through the '90s.