A No-Fly Zone Over Libya? Ctd

James Mattis, the general in charge of US Central Command, tells a Senate committee that establishing a NFZ "would be challenging":

You would have to remove the air defence capability in order to establish a no-fly zone - so no illusions here - it would be a military operation, it wouldn’t simply be telling people not to fly airplanes.

Dish discussion of the possibility here, here and here.