The UN nuclear watchdog agency today set a special meeting to vote on whether its present head can run for a third term. Ingrid Hall, the Canadian diplomat chairing the board of governors of the International Atomic Energy Agency, announced the decision in a letter dated April 5. The April 27 meeting was called by request of developing nations on the 35-nations board of governors, who support the reappointment of IAEA Director General Mohamed ElBaradei for a third term. The United States and some of its allies are opposed. The U.S. wants someone sharing its view of which countries represent nuclear threats and what to do about them. ElBaradei has challenged those views, particularly over Iraq and Iran.