In July 1968, Saddam participated in a bloodless coup led by Ahmed Hassan al-Bakr that overthrew Abdul Rahman Arif, Salam Arif's brother and successor. While Saddam's role in the coup was not hugely significant (except in the official account), Saddam planned and carried out the subsequent purge of the non-Ba'athist faction led by Prime Minister Abd ar-Razzaq an-Naif, whose support had been essential to the coup's success. According to a semi-official biography, Saddam personally led Naif at gunpoint to the plane that escorted him out of Iraq. Arif was given refuge in London and then Istanbul. Al-Bakr was named president and Saddam was named his deputy, and deputy chairman of the Ba'athist Revolutionary Command Council. According to biographers, Saddam never forgot the tensions within the first Ba'athist government, which formed the basis for his measures to promote Ba'ath party unity as well as his resolve to maintain power and programs to ensure social stability. Although Saddam was al-Bakr's deputy, he was a strong behind-the-scenes party politician. Al-Bakr was the older and more prestigious of the two, but by 1969 Saddam clearly had become the moving force behind the party.