What's most striking about the mass expulsion of Syrian diplomats from western capitals today is that it is happening at all. If we are to draw a comparison to Libya: No Libyan diplomats were expelled during the height of Muammar Gaddafi's crackdown against rebels and peaceful protesters. Rather, they defected. En masse.
As of 11:20 AM EDT on April 14th, 2012, the first resolution on Syria, Resolution 2042, was adopted by the United Nations Security Council, after a year of protests and conflict in the Syrian Arab Republic.