Mostafa Ahmadi Roshan, a 32-year-old nuclear scientist working at the Natanz uranium enrichment plant, was killed on January 11.  According to Iran’s Mehr news agency, Mr. Roshan was deputy director of commercial affairs at Natanz in charge of procurement.  Mr. Roshan is one of five known scientists with connections to Iran’s nuclear program to be killed since 2007.  These deaths are allegedly part of a covert campaign of assassinations carried out by Israel and intended to set back Iran's nuclear program.