African Union mediator urges Security Council action on Sudan, warns that parties are locked in the "logic of war."
As spring meetings begin, IMF chief Lagarde expects the Fund's firepower to be significantly increased.
Libyan investigators brief the International Criminal Court's prosecutor on their case against Saif Gaddafi.
World Bank chief calls Argentine plan to nationalize oil company "a mistake."
Russia still undecided about whether to attend NATO's May summit.
EU foreign ministers are ready to suspend most sanctions on Myanmar.