Babrak Karmal befriended fellow inmate Mir Akbar Khyber, who introduced Karmal to Marxism. Karmal changed his name from Sultan Hussein to Babrak Karmal, which means "Comrade of the Workers'" in Pashtun, to disassociate himself from his bourgeois background. When he was released from prison, he continued his activities in the student union, and began to promote Marxism. Karmal spent the rest of the 1950s and the early 1960s becoming involved with Marxist organizations, of which there were at least four in Afghanistan at the time; two of the four were established by Karmal. When the 1964 Afghan Provisional Constitution, which legalised the
Prime Minister of Iran and chose Mohammad Ali Rajai as his prime minister, mainly because of pressures imposed by Majlis representatives, specially those close to Islamic Republic Party. Rajai served in the post until Banisadr's impeachment in June, 1981, and was elected as president in the elections of July 24, 1981. Rajai chose Mohammad Javad Bahonar as his prime minister, but they were assassinated together in Prime Minister's office only a few weeks later, on August 30, 1981. When Ali Khamenei became president in the elections of October, 1981, he first introduced right-leaning Ali Akbar Velayati to the Majlis as his prime minister, but