"The UN security council has called for an immediate end to the violence in Libya and demanded that Muammar Gaddafi live up to his responsibilities to protect his own people."
-----------------------
The responsibility to protect (RtoP or R2P) is a norm or set of principles based on the idea that sovereignty is not a privilege, but a responsibility. RtoP focuses on preventing and halting four crimes: genocide, war crimes, crimes against humanity, and ethnic cleansing.
The responsibility to protect can be thought of as having three parts.
1. A State has a responsibility to protect its population from genocide, war crimes, crimes against humanity and ethnic cleansing (mass atrocities).
2. If the State is unable to protect its population on its own, the international community has a responsibility to assist the state by building its capacity. This can mean building early-warning capabilities, mediating conflicts between political parties, strengthening the security sector, mobilizing standby forces, and many other actions.
3. If a State is manifestly failing to protect its citizens from mass atrocities and peaceful measures are not working, the international community has the responsibility to intervene at first diplomatically, then more coercively, and as a last resort, with military force.
http://en.wikipedia.org/wiki/Responsibility_to_protectUN's Responsibility to Protect
http://www.un.org/ga/search/view_doc.asp?symbol=a/res/60/1