The most important factor in the defeat of the Greek Communist was the spilt between Yugoslavian leader Tito and Stalin.  A biography of Tito and a the nature of the spilt.  The Greek Communist support Stalin in the dispute and in July 1949 the Yugoslavs close the border and close down Greek Communist bases in Yugoslavia.  The military campaign in the summer of 1949 is told and the preparations for the major Battle of Grammos which features in the next episode.