The head of the International Atomic Energy Agency, Mohamed ElBaradei, will run unchallenged for a third term as head of the UN nuclear watchgroup, a move that puts a serious dent in the US campaign to oust him. The Vienna-based International Atomic Energy Agency said this week that no other candidates had come forward before the December 31 deadline. ElBaradei, who is an Egyptian lawyer and diplomat, has headed the agency since 1997. He has been critical of the US occupation of Iraq and Washington’s position on Iran. The US efforts to oust him were damaged last month when the Washington Post reported that the US had tapped his phones.