Answer:
D)establishing a buffer zone of friendly communist states to protect the Soviet Union
Step-by-step explanation:
Joseph Vissarionovich Stalin can be regarded as Georgian revolutionary and also a Soviet politician. He ruled the Soviet Union between the year 1927 to the year 1953. One of his primary goal during negotiations with Britain and the United States at Yalta and Potsdam was establishment of a buffer zone of friendly communist states to protect the Soviet Union