[*]The world would be better without Gaddafi. But is that a vital U.S. national interest? If it is, when did it become so? A month ago, no one thought it was.
A month ago there was no alternative on the horizon.
[*]How much of Gaddafi's violence is coming from the air? Even if his aircraft are swept from his skies, would that be decisive?
This is a valid concern. A few of the other points reference this too--is a no fly zone enough? Gaddafi still has considerable advantages on the ground, a better trained, better equipped army. The air campaign might have to go beyond "no fly" and actually turn into air support. The ground forces would probably have to be armed. That might STILL not be enough, but it might be the point at which further intervention becomes higher risk.
The way to handle this is political: Civilian leaders should get out in front of this before the air campaign starts and make sure that everyone on all sides is aware of their fear that Gadaffi will use human shields, and in particular, get Arab League countries to buy in to the idea that the blame for that rests with Gadaffi, to have that all agreed up front. The media would then be primed to go looking for proof that Gadaffi was using human shields, thus managing the message.
You know politicians are good for something, and this is what they're good for--if done properly the blame can be put squarely on Gadaffi's shoulders.
On the other hand it's perfectly reasonable for the Arab League to object and say, no, if it means civilian casualties, we don't want an air campaign after all, and in that case, if that's what's said, it should be respected too. The US should not make this decision unilaterally, but instead should offer support as just one of many nations offering support to whatever consensus arises on how to handle the issue.
[*]What lesson should be learned from the fact that Europe's worst atrocity since the Second World War - the massacre by Serbs of Bosnian Muslims at Srebrenica - occurred beneath a no-fly zone?
This is also a good point. The gambit rests on the air support / no-fly being enough to give the rebels an advantage over Gaddafi.
[*]If collateral damage from such destruction included civilian deaths
Gaddafi will probably put his anti-air defense in civilian areas just in the hopes of creating such a problem. This should NOT be compared with the kids if Afghanistan though, who were killed by careless and sloppy targeting--in other words avoidable had NATO done its job properly. This should be compared with Gaza/Lebanon where Hamas/Hezbollah use their civilian populations as human shields. In such cases I think the blame rests with those using the human shields--it is not a case of sloppy disregard for other people's lives such as recently in Afghanistan.
[*]If we decide to give war supplies to the anti-Gaddafi fighters, how do we get them there?
This does not sound like a big problem. With a no fly zone in place presumably ships can land at Benghazi without serious challenge by Gaddafi.
[*]Presumably we would coordinate aid with the leaders of the anti-Gaddafi forces. Who are they?
Who knows? I am willing to bet they're a better lot than Gaddafi.... even if they turn out to be a bunch of nuts, Gaddafi really is THAT bad.
[*]Could intervention avoid "mission creep"? If grounding Gaddafi's aircraft is a humanitarian imperative, why isn't protecting his enemies from ground attacks?
I think it could and possibly SHOULD creep into air support and resupply, but no further.
[*]In Tunisia and then in Egypt, regimes were toppled by protests. Libya is convulsed not by protests but by war. Not a war of aggression, not a war with armies violating national borders and thereby implicating the basic tenets of agreed-upon elements of international law, but a civil war. How often has intervention by nation A in nation B's civil war enlarged the welfare of nation A?
Arguably almost all nations in the world have an interest in a stable Middle East. It's hard to imagine how that will happen if Gaddafi is left in power. At this point Western nations have ALREADY called for his ouster. Is it really going to make a difference to Gaddafi if we stop at what we've done already??? Probably not. We're basically already fucked unless he's ousted.
[*]Before we intervene in Libya, do we ask the United Nations for permission?
Absolutely yes, and ideally with the blessings of the Arab League too, which I understand has in fact made some calls for a no fly zone.
If it is refused, do we proceed anyway?
Hell no.
have we not made U.S. foreign policy hostage to a hostile institution?
I would call it co-operating with the rest of the world.