A former Iranian deputy defense minister defected to the United States and is spilling his country’s nuclear secrets, an Israeli newspaper reported.Yediot Achronot reported Sunday that Ali Reza Asgari, who went missing while visiting Turkey last month, has revealed to the CIA that Tehran has been pursuing a secret nuclear program. According to the report, which quoted an unnamed U.S. official, the secret Iranian program involves enriching uranium with laser and chemical enhancers. Western and Iranian officials had no immediate comment.