Since the 1990s, he has also focused on the genocides, which were relatively little known, against the Armenians, Greeks of Pontos and Assyro-Chaldeans under the Ottoman Empire before, during, and after the First World War. He participated in a genocide conference at the University of Pittsburgh in March 2000 and published the chapter "The first genocide of the twentieth century" in the Columbia University book "Ethnic Cleansing in Twentieth Century Europe" edited by Steven Vardy. In 2005 he spoke at the American University in Yerevan, Armenia, a lecture which resulted in Zayas' book "the Genocide against the Armenians." In 2007 he published an article on "The Istanbul Pogrom of September 1955." He advocates the creation of a Constitutional Convention for Cyprus and published a proposal together with Malcolm Shaw and Andreas Auer and published relevant articles in the Cyprus Yearbook of International Law 2006 and 2007. In 2011 he published a chapter on the Ottoman genocide of Christian Minorities in the 2011 book edited by Tessa Hofmann, "The Genocide of the Ottoman Greeks" (Caratzas, New York, pp. 311– 341). In 2019, he participated in the international genocide conference in Athens, where he delivered two papers.