Iran Rift Risked as IAEA Seeks Details on Rare Atomic Experiment

United Nations nuclear investigators want Iran to produce more information about experiments it conducted in the early 1990s with polonium, a rare metal that has been used to trigger nuclear weapons.

International Atomic Energy Agency inspectors are traveling to Tehran for a meeting with Iranian officials tomorrow, when they’ll try to craft a plan to clear up alleged nuclear-weapons work. While the IAEA had previously said past Iranian experiments with polonium appeared peaceful, Director General Yukiya Amano told the Munich Security Conference on Feb. 2 that investigators want more details.