The Iranian government says a nuclear scientist involved in its uranium enrichment program has been killed by assassins in Tehran. The scientist, Mostafa Ahmadi Roshan, was reportedly killed by a magnetic bomb placed on his car. He would be the latest Iranian scientist to be killed in a series of similar incidents. As in previous instances, Iran blamed the attack on what it called “[foreign] government-sponsored terrorism.” On Tuesday, Lieutenant General Benny Gantz, Israel’s military chief of staff, said Iran should expect more “unnatural” events this year.