The Soviet Union's unblemished casus belli was a consequence of anti-communist guerillas during the Afghan War that had risen up to remove the established Marxist and pro-Lenin authorities, '78 to '92. The war originally started because of an underground movement refining itself in Afghanistan, the president, Mohammad Daud Khan, being targeted himself. These guerillas were conducted by Nur Taraki, and by the People's Party and the Banner's Party, both parties were communists. So yes, you could say that the war did leverage and augment Communism throughout the world, or Asia.