Who Made Us The Global Policeman?

SEE HERE  Isn't this intrusion into the affairs of other sovereign states what the liberals didn't like about George W. Bush?  So how come we have a president who is playing global dictator and messing with Libya, Egypt, and Syria and getting ready to deploy U.S. military forces on what looks to be a phony false flag deployment of gas WMDs alleged by Assad's forces but more likely by the rebels.  In any case "What difference does it make?"   We don't have a dog in this fight or maybe a rat since both sides seem ratty enough.  Let's not interfere.  We gain nothing by interfering and risk the instigation of a wider and more dangerous war.