Wikipedia said:http://en.wikipedia.org/wiki/Kars
After World War II, the Soviet Union attempted to annul the Kars treaty and regain its lost territory. On June 7, 1945, Soviet Foreign Minister Vyacheslav Molotov told the Turkish ambassador in Moscow that the regions should be returned to the Soviet Union, in the name of both the Georgian and Armenian republics. Turkey found itself in a difficult position: it wanted good relations with the Soviet Union but at the same time they refused to give up the territories. Turkey itself was in no condition to fight a war with the Soviet Union which had emerged as a superpower after the second world war. By the autumn of 1945, Soviet troops in the Caucasus were already assembling for a possible invasion of Turkey. However opposition stemmed from British leader Winston Churchill who objected to these territorial claims as additional areas of where the Soviet government could exert its influence while President of the United States Harry S. Truman of the United States felt that matter shouldn't concern other parties. The Cold War was just beginning.
So what if the Soviets invaded Turkey in 1945?