Subsequently during 1936, Dengel was recalled to party work, sent to Prague between April and September to facilitate and secure the production of the German-language "Deutsche Volkszeitung" (newspaper) being produced in the city at that time. After returning to Moscow at the end of the year, he started work at the Comintern's International Lenin School as a teacher-instructor. A few months after that news came through from Germany that on 8 March 1938 the government had deprived Dengel and his family of German citizenship rights. At the (which took place in Draveil, on the edge of Paris a unanimous decision was taken to enlarge the Party Central Committee, and Dengel was re-elected to it. Whether on account of travel difficulties or on account of his deteriorating health, he was, along with at least three party comrades who were probably also based in Moscow at the time and had not made the journey to France, elected in his absence. The conference itself had an unforeseen and disappointing epilogue. A few months after the exiled leaders of the German Communist Party passed resolutions committing to victory over fascism, comrades learned of the non-aggression pact between the Nazi and Communist dictatorships. Stalin and Hitler were suddenly on the same side. A few weeks later German forces and Soviet forces invaded Poland from opposite directions. In Moscow it was necessary to undergo a rapid change of heart when it came to "a united front against fascism".