Marković finally fled to Austria with the help of the Communist Party of Yugoslavia, where he spent several months before reaching the Soviet Union. He escaped from a prison in Vienna with the help of the Committee for the Defense of Victims of the White Terror in the Balkans, led by Henri Barbusse. He arrived in Moscow on 6 September 1926 and was soon awarded the title of political emigrant, as well as Soviet citizenship. Physically and psychologically drained, he was instructed to take a long leave to rest and recuperate.
