Describe what effect the presidential doctrine you chose has had on regional or global affairs since it was announced during the Cold War. 

Describe what effect the presidential doctrine you chose has had on regional or global affairs since it was announced during the Cold War.
That is, how did the doctrine change the status quo regionally or globally after it was announced by the U.S.?  What happened in Western Europe after the Truman Doctrine was announced?  What happened in the Middle East after the Eisenhower Doctrine was announced?  What happened with Cuba or Vietnam after Kennedy offered up his doctrine of flexible response?  What happened in Southeast Asia or the Persian Gulf after the Nixon Doctrine went in effect?  What happened in the Middle East after the Carter Doctrine was announced?  What happened in Central America or Africa or the Middle East after Reagan announced his doctrine?