After a strong lobbying of Russian scientists, the Soviet government initially set up a commission that was to address the "uranium problem" and investigate the possibility of chain reaction and isotope separation. The Uranium Problem Commission was ineffective because the German invasion of Soviet Union eventually limited the focus on research, as Russia became engaged in a bloody conflict along the Eastern Front for the next four years. The Soviet atomic weapons program had no significance, and most work was unclassified as the papers were continuously published as public domain in academic journals.