Journal "Questions of History", Moscow, 1997, No. No 9-11, 1998, No 2. 99 pages . A4 format. This publication is not an indictment of Karl Radek for his involvement in the deaths of Karl Liebknecht and Rosa Luxemburg. A historian cannot and should not be a prosecutor . Only an attempt is made to understand what the documents published below - "The Case of Karl Radek" and "The Case of Georg Sklartz" - give in order to clarify the question of Radek's possible complicity in the events of January 15, 1919. in Berlin . These materials are based mainly on the B. archive. and . Nikolayevsky . Many questions have yet to be answered.