He is known for being the founder and president of the Turkish Peace Association which was banned shortly before the military coup in Turkey on 12 September 1980.
[3] He was appointed to a security post in Ereğli, Zonguldak, and married there a Turkish woman named Seniye Hanım whose father was the owner of the Çamlıca coal mine.
[8] Dikerdem held various posts at the Ministry such as director general of the Middle East and Cyprus Department between 1955 and 1957.
[9] In this capacity he was among the members of the Turkish delegation in the meetings on Cyprus held in London between 29 August and 6 September 1955.
[5] After his retirement from diplomatic post in 1976 Dikerdem contributed to the newspapers Politika, Milliyet and Cumhuriyet.
[9] Dikerdem and other members of the Association, including Orhan Apaydın, Orhan Taylan, Uğur Kökden, Şefik Asan, Niyazi Dalyancı, Ali Sirmen, Metin Özek, Mustafa Gazalcı, Haluk Tosun, İsmail Hakkı Öztorun, Kemal Anadol, Reha İsvan and Aykut Göker were arrested on 26 February 1982.
[8] He had been diagnosed with cancer during his detention in 1982 and was transferred from Maltepe military prison to Cerrahpaşa hospital before the announcement of the verdict.
[9][12] The European Parliament issued a resolution in October 1984 asking the immediate release of Dikerdem due to his deteriorating health.
[14] Unlike other Turkish Marxists and socialists, he continued to support socialism after the collapse of the Soviet Union in 1991.