The main line of criticism of Obama from advocates of waging war against the Syrian regime, including Hillary Clinton and John McCain, is the U.S. failure to arm the anti-Assad/pro-American rebels. There is no reason to believe that insofar as such rebels exist, the U.S. could find them. As many have pointed out, supplying Syrian rebels is tantamount to supplying ISIS.
Belief in such an opposition is of a piece with delusions of limitless American power. We will be greeted as liberators anywhere we choose to go. We can bust a place up and we will always find friends waiting for us, as in Iraq, Libya, etc. etc. etc. Old folks will remember “Vietnamization.” Why doesn’t Hillary?