Konstantin "Koča" Popović (; 14 March 1908 – 20 October 1992) was a Yugoslav politician and communist volunteer in the Spanish Civil War, 1937–1939 and Divisional Commander of the First Proletarian Division of the Yugoslav Partisans. He is on occasion referred to as "the man who saved the Yugoslav Partisans", because it was he who anticipated the weakest point in the Axis lines on the Zelengora–Kalinovik axis, and devised the plan for breaking through it during the Battle of Sutjeska, thus saving Tito, his headquarters and the rest of the resistance movement. After the war, he served as the Chief of the General Staff of the Yugoslav People's Army, before moving to the position of Foreign Minister and spent the final years of his political career as the Vice President of Yugoslavia. Despite being a member of the Communist Party of Yugoslavia, he was a supporter of free-market reforms and was also a member of a group of Serbian liberals, a prominent political movement in the 1970s, which also included Marko Nikezić and Latinka Perović. He retired in 1972, amidst pressure against his group of liberals. He spent the rest of his life in Dubrovnik and was very outspoken against the Yugoslav Wars and the regimes of Franjo Tuđman and Slobodan Milošević. In his youth, he was one of the founding members of the Serbian Surrealist movement. He co-wrote a book with Marko Ristić. Also, Popović was among the founders of FK Partizan Belgrade, the football section of the Yugoslav Sports Association Partizan. Biography Popović came from a prosperous Belgrade family and spent the First World War in Switzerland. He was also one of the thirteen signatories of the Serbian Surrealist manifesto in 1930. In 1929, he moved to Paris to study Law and Philosophy. Here he mixed with the Left Bank world of poets, writers, artists and intellectuals. He became an active Surrealist, active in both the French and Serbian Surrealist groups. In 1931 Nacrt za jednu fenomenologiju iracionalnog (Outline for a Phenomenology of the Irrational) was published which he had co-written with Marko Ristić. He then became involved with the then illegal Yugoslav Communist Party. In Paris there was a center run by Comintern and headed by Tito which was used to feed volunteers from the Balkans to the Republicans in the Spanish Civil War. Popović was drafted through this center along with a select group of Party