In which case, there's another question for the pile: to arm, or not to arm? And it is not clear-cut, either way. While the West appears keen to eject Gaddafi without pressing the Big Red Button itself, the idea of advanced weaponry filtering into the hands of the rebels' less, erm, liberal-minded comrades is not a happy one. Yet refuse them that weaponry, and the rebels may just turn away from the West, towards those less liberal actors, anyway.
For now the issue seems to have been parked — William Hague has claimed that it wasn't discussed during today's conference. But should the rebels keep retracing their boot steps, back away from Tripoli, then expect the question to arise again and again.