Leningrad affair
The Leningrad affair , or Leningrad case ( , "Leningradskoje delo" ) , was a series of criminal cases fabricated in the late 1940s–early 1950s by Joseph Stalin in order to accuse a number of prominent politicians and members of the Communist Party of the Soviet Union of treason and intention to create an anti-Soviet organisation based in Leningrad . 
<triplet> Joseph Stalin <subj> Communist Party of the Soviet Union <obj> member of political party