Rebel Warlord Says His Group Carried Out Killing of Moscow-Backed Chechen Leader MOSCOW May 17, 2004 — A top rebel warlord has claimed responsibility for a bomb attack that killed Chechnya's Moscow-backed leader, Akhmad Kadyrov, and pledged to continue attacks against the Russian authorities, according to a statement released Monday. Warlord Shamil Basayev, who calls himself Abdullah Shamil Abu Idris, claimed responsibility for the May 9 attack in a statement that was posted Monday on a rebel Web site, calling it a "small, but important victory." He said that other such operations against Russia's so-called collaborators in Chechnya were in...