libya is very tribal. there are still a lot of people in libya who like and support gaddafi. the thing with libyans, if it's not obvious already, is that they're quite willing to spill blood for this kinda stuff. the country is fractured, and by ousting gaddafi, it creates a power vaccuum, so the country from this point is pretty much going to hell. tho the US didn't want to bear the full responsibility so they went through the UN to distribute the responsibility.