Rights groups are coalescing around the idea that there must be some immediate action taken to stop the ongoing abuses--and that to deter future similar abuses, the international community needs to enforce some sort of accountability mechanism for individuals responsible for the slaughter.
A potential No Fly Zone is only a humanitarian half measure. It would let the international community say that it is doing something, but there is very little a No Fly Zone can actually do to stop ongoing slaughter.
In a rambling address to the country last night, Col. Muammar Qaddafi's son, Se'f al Islam Qaddafi warned (promised?) a civil war if protesters were to end his father's 40 year rule. Evidence that a civil war has already broken out.