Tsankov, Alexander (tsänˈkôf) [key], 1879–1959, Bulgarian politician. A professor of political economy at the Univ. of Sofia, he was instrumental in the overthrow (1923) of the dictatorship of Alexander Stambuliski. As premier (1923–26), he mercilessly fought members of the Peasants' and Communist parties, and his administration's relations with Greece and Yugoslavia were strained. After his government fell, Tsankov remained active in right-wing politics and favored the Nazis. In 1944 he fled Bulgaria. He died in Buenos Aires. His name is also spelled Tsankoff, Zankoff, or Zankov.