sentences:  On September 28, 1939, Germany and the Soviet Union having partitioned Poland signed a border agreement, including a second secret protocol, handing Lithuania to Stalin in exchange for two Polish provinces.Shortly thereafter, on October 3, 1939, the German ambassador to the Soviet Union, Friedrich Werner von der Schulenburg, had also suggested to Molotov that various changes in the borders of the Lithuanian territory wait until the "Soviet Union incorporates Lithuania, an idea on which, I believe, the arrangement concerning Lithuania was originally based.