Iran has dismissed criticism by the International Atomic Energy Agency of its refusal earlier this year to let one IAEA expert into the country as part of a team investigating allegations of nuclear weapons research. Tehran said it had a sovereign right to decide who to admit onto its territory. But its failure to issue a visa to an IAEA official, who diplomatic sources said was probably a Western atomic bomb expert, may deepen longstanding Western suspicions that it is stonewalling the U.N. agency’s inquiry. The IAEA said last month that Iran had not issued a visa for one member of a team that visited Tehran on Aug. 31 to try to advance the investigation into what the U.N. agency calls the possible military dimensions of the country’s nuclear programme. It was the third time the person, whom the U.N. agency did not identify, had been […]