LONDON - Iranian state television broadcast on Sunday what it described as the confessions of an Iranian academic with Swedish residency who it said had provided information to Israel to help it assassinate several senior nuclear scientists.His wife, speaking by telephone from Stockholm, said he had been forced by his interrogators to read the confession.Iran's Supreme Court upheld last week a death sentence against Ahmadreza Djalali, a doctor and lecturer at the Karolinska Institute, a Stockholm medical university.Djalali was arrested in Iran in April 2016 and later convicted of espionage. He denied the charges.In the television report, Djalali was linked to the assassination of four Iranian scientists between 2010 and 2012 that Tehran said was an Israeli attempt to sabotage its nuclear energy program.Djalali said in the report that he had given the Israeli intelligence agency Mossad information about key nuclear scientists.