Iran's leader promises retaliation for nuclear scientist's killing

Khamenei said in his Twitter post that Iranian officials must take up the task of 'pursuing this crime and punishing its perpetrators and those who commanded it.'

Khamenei said in his Twitter post that Iranian officials must take up the task of 'pursuing this crime and punishing its perpetrators and those who commanded it.'

Khamenei said in his Twitter post that Iranian officials must take up the task of 'pursuing this crime and punishing its perpetrators and those who commanded it.'