Iran stops cooperating with U.N.'s nuke experts

Associated Press VIENNA, Austria -- Iran signaled Thursday that it will no longer cooperate with U.N. experts probing for signs of clandestine nuclear weapons work, confirming the investigation is at a dead end a year after it began. The announcement from Iranian Vice President Gholam Reza Aghazadeh compounded skepticism about denting Tehran's nuclear defiance, just five days after Tehran stonewalled demands from six world powers that it halt activities capable of producing the fissile core of warheads. Besides demanding a suspension of uranium enrichment -- a process that can create both fuel for nuclear reactors and payloads for atomic bombs -- the six powers have been pressing Tehran to cooperate with the International Atomic Energy Agency's probe. Iran, which is obligated as a signer of the Nuclear Nonproliferation Treaty... [read full story]