Did Libya Revolutionize The Arab World?

Marc Lynch reads the Arab League deliberations about Assad's murders as evidence of a paradigm shift among the region's leaders:

The rapid spread of a new norm against Arab regimes killing their own people is a frankly astonishing, but largely unremarked, change in the regional game.  Since the Arab League backed the UN intervention in Libya in March, the idea that regimes might be sanctioned for their domestic brutality has become a normal part of the Arab political debate and enshrined in official Arab League resolutions. Both the GCC's political transition plan for Yemen and this month's Arab League peace plan for Syria condemned regimes for their violence and called for far reaching political changes.  They haven't stopped the violence.  But the idea that they should is something genuinely new — and has major implications beyond the immediate outcome in either country.

Walter Russell Mead isn't buying it.