Dokka Umarov
Supyan Abdullaev (Russian: Супьян Абдуллаев; 8 November 1956 – 28 March 2011) was the vice president of the Chechen Republic of Ichkeria. He was appointed to this position (vacant since the death of Shamil Basayev) on 19 March 2007, by the President of Chechen Republic of Ichkeria, Dokka Umarov. He was considered the most senior figure after Umarov in the ranks of the Caucasian Emirate and a possible successor.