The lopsided vote at the Human Rights Council is significant for the fact that all four Arab members of the Council voted in favor of the resolution, while China and Russia led an opposition (and were joined by Cuba and Ecuador).
Armed intervention should always be an absolute last resort, only to be used when all options fail--and when justified on moral and legal grounds. This could all unravel tomorrow if the Libya descends into anarchy. But for now, this is pretty much the platonic ideal of humanitarian intervention.
Libya will have to engage in some sort of "nation-building" process. These kinds of activities have traditionally fallen under the providence of the United Nations.
8 years ago today, a suicide bomber pulled his truck along side the United Nations headquarters in Iraq. 22 people were killed in the blast, including the UN's head of mission Sergio Vieira de Mello. Since then, August 19 has become a memorial day and also day to honor the work and sacrifices of humanitarian workers across the globe.