historian Vladimir Ćorović subsequently selected Čubrilović as his personal assistant. In 1934, Čubrilović became a docent at the university. From 1921 to 1939, he was an active member of the Agrarian Party. In 1937, Čubrilović delivered a lecture to the Serbian Cultural Club in which he outlined possible methods the Yugoslav government could use to coerce Albanians into leaving Kosovo. Čubrilović argued that the only way to "deal" with the Albanians was to use the "brute force of an organized state". "If we do not settle accounts with them," he opined, "in 20–30 years we shall have to cope with a terrible irredentism." He was highly critical of government attempts to colonize parts of Kosovo as he felt they were ineffective. Čubrilović also criticized the government for not having seized the opportunity presented by a 1918–21 revolt among Kosovo Albanians to force them out of the region. He stated that the benefits of the forced expulsion of Albanians outweighed any risk since "a threat to Yugoslav security would be removed". He reasoned: "At a time when Germany can expel tens of thousands of Jews and Russia can shift millions of people from one part of the continent to another, the shifting of a few Albanians will not lead to the outbreak of a world war." The content of the lecture was preserved in writing, came into the possession of Yugoslavia's military intelligence service and was preserved at the Military Archive in Belgrade. In the ensuing decades, Albanian historians have referred to it as evidence of a plot to evict Kosovo's Albanian population, usually claiming it was written at the request of the Yugoslav General Staff. However, there is no evidence to this effect. Professor Sabrina P. Ramet doubts the lecture had much influence on the Yugoslav authorities, who were already long committed to seeing Kosovo Albanians leave the province and emigrate to Turkey. World War II and later life In 1939, Čubrilović became a professor at the University of Belgrade. In April 1941, the Axis powers invaded Yugoslavia, and Čubrilović was arrested by the Gestapo in the coastal town of Risan. From there, he was transferred to Belgrade and imprisoned at the Banjica concentration camp, where he spent much of the war. Once German forces had been forced out of Serbia, Čubrilović became an advisor to Yugoslavia's new communist leader, Josip Broz Tito. The anti-Serb pogroms of World War II,