First of all let me state that I personally am not advocating a NFZ in Libya.
However, if various western powers elect to go down that route I have a sneaking suspicion that by the time they have all got their ducks in a row it will already be over in Libya one way or another.
Having said that - I note that somebody said the USS Enterprise was on the way. It will certainly all be over when the Enterprise arrives - there is no way that Libya will be able to hold out against phasers and photon torpedoes!!