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Jumar Ẋamadi khant Dokka, also known as Dokka Umarov, was a Chechen militant separatist and the first president of the Chechen Republic of Ichkeria. He was a key figure in the Second Chechen War and led numerous attacks against Russian forces. Umarov's Chechen name, Jumar, is derived from the Arabic name "Juma" and means "Friday".