The decision to carry out a genocide against the Armenian people was made by the political party in power in the Ottoman Empire. This was the Committee of Union and Progress (CUP) (orIttihad ve Terakki Jemiyeti), popularly known as the Young Turks. Three figures from the CUP controlled the government; Mehmet Talaat, Minister of the Interior in 1915 and Grand Vizier (Prime Minister) in 1917; Ismail Enver, Minister of War; Ahmed Jemal, Minister of the Marine and Military Governor of Syria. This Young Turk triumvirate relied on other members of the CUP appointed to high government posts and assigned to military commands to carry out the Armenian Genocide. In addition to the Ministry of War and the Ministry of the Interior, the Young Turks also relied on a newly-created secret outfit which they manned with convicts and irregular troops, called the Special Organization (Teshkilati Mahsusa). Its primary function was the carrying out of the mass slaughter of the deported Armenians. In charge of the Special Organization was Behaeddin Shakir, a medical doctor. Moreover, ideologists such as Zia Gokalp propagandized through the media on behalf of the CUP by promoting Pan-Turanism, the creation of a new empire stretching from Anatolia into Central Asia whose population would be exclusively Turkic. These concepts justified and popularized the secret CUP plans to liquidate the Armenians of the Ottoman Empire. The Young Turk conspirators, other leading figures of the wartime Ottoman government, members of the CUP Central Committee, and many provincial administrators responsible for atrocities against the Armenians were indicted for their crimes at the end of the war. The main culprits evaded justice by fleeing the country. Even so, they were tried in absentia and found guilty of capital crimes. The massacres, expulsions, and further mistreatment of the Armenians between 1920 and 1923 were carried by the Turkish Nationalists, who represented a new political movement opposed to the Young Turks, but who shared a common ideology of ethnic exclusivity.