Sentence:  In each of the last , the trial marked the beginning of a new course : in <WSD>Moscow</WSD> the liquidation of the Old Bolsheviks and the tightening of Stalin 's dictatorship ; in the United States the initiation of militant anti Communism , with the repentant ex Communist in the vanguard . 
Meaning of the word marked with <WSD> tags:  a city of central European Russia; formerly capital of both the Soviet Union and Soviet Russia; since 1991 the capital of the Russian Federation