Iran has begun producing uranium enriched to 60 percent at its Fordo plant, official media reported Tuesday about the underground facility that reopened three years ago amid the breakdown of its nuclear deal with major powers. The move was part of Iran’s response to the UN nuclear watchdog’s adoption last week of a censure motion drafted by Western governments accusing it of non-cooperation. “Iran has started producing uranium enriched to 60 percent at the Fordo plant for the first time,” Iran’s ISNA news agency reported. An atomic bomb requires uranium enriched to 90 percent, so 60 percent is…