IAEA chief Mohammed ElBaradei on Saturday called for an urgent reform of the UN Security Council, saying it has too often failed to effectively address international crises.
"Too often, the Security Council's engagement is inadequate, selective or after the fact," said the chief of the International Atomic Energy Agency (IAEA).
"The tragedies of recent years in Rwanda, the Democratic Republic of Congo and Darfur are cases in point," he added in a lecture in Karlsruhe, Germany, before receiving an award for "global bridge building."
"When dealing with threats of nuclear proliferation and arms control, the Security Council has too often fallen short," ElBaradei said.
The Security Council "has not responded or followed up effectively to the emergence of new countries with nuclear weapons."
"It is clearly time for the Security Council to be reformed, expanded and strengthened, as part of the current efforts to reform and revitalize the United Nations," ElBaradei said.
He proposed five measures -- tightening controls, protecting materials, supporting verification, reinvigorating disarmament and strengthening the Security Council -- to meet the challenges to international peace and security, including those related to nuclear arms control.
He warned, among others, that "the longer the Security Council is not acting systematically, equitably and effectively, as the guardian of international peace and security, the more its legitimacy will be undermined, and a sense of insecurity will continue to prevail."