He graduated from the Faculty of Law of the University of Damascus and postgraduate studies at the University of Friendship of Peoples. Patrice Lumumba. In 1982 he defended his dissertation at the Moscow branch of the Institute of Oriental Studies of the USSR Academy of Sciences on "The Secret Relationship between Nazism and Zionism", the main ideas of which some sources interpreted as Holocaust denial. The director of the institute, EM Primakov, appointed Abbas VI Kiselyov, a specialist in the history of Palestine, as the scientific supervisor. Based on his dissertation, Abbas wrote a monograph, The Other Side: The Secret Relations between the Nazis and the Zionist Leadership.