A lot has changed in the world since 1945.  There was the Korean War, Vietnam, Grenada, Panama, Gulf War I, Kosovo, Afghanistan, Iraq, Libya, Yemen, et al...  The Cold War started and ended.  America has gone from amassing support from virtually all other countries (Gulf War I), to minimal support from a few countries (Gulf War II).  Did you know that American has bank rolled the Japanese military since the end of WWII?  Did you know that the reason Europe can afford Universal Health Care is because American pays for their defense?  Then there is the United Nations.  An insignificant body of hack dictators and human rights violators that always seem to accuse America of that very thing.  Oh yeah, and the UN enjoys the benefits of being located in NYC with over $3 billion in American funding.  Ugh!  Mark Steyn has a brilliant article that covers some of this very well.  In these times of massive deficits, we need to look long and hard at our allies and defense spending.  I would start by pulling out of Europe and requiring Japan to spend more on defense.  It drives me completely CRAZY that we spend BILLIONS on ungrateful nations while out southern border with Mexico is in chaos. Ugh!