Read MoreOn Saturday, Iranian President Hassan Rouhani blamed Israel for the assassination of a top nuclear scientist, Mohsen Fakhrizadeh. In 2018, Israeli Prime Minister Benjamin Netanyahu singled out Fakhrizadeh in a news conference, accusing him of developing nuclear weapons. Holly Williams has more.On Saturday, Iranian President Hassan Rouhani blamed Israel for the assassination of a top nuclear scientist, Mohsen Fakhrizadeh. In 2018, Israeli Prime Minister Benjamin Netanyahu singled out Fakhrizadeh in a news conference, accusing him of developing nuclear weapons. Holly Williams has more.