This book offers an illuminating bridge between the political and social dimensions of the Soviet-Finnish War of 1939-40. The conflict represented a significant crisis for the Soviet Union, inspiring international condemnation and a significant loss of face for its supporters, both at home and abroad. The focus of this study is not upon the military dynamics of the war, but upon its ability to influence events, interpretations and interactions between agents and institutions within the Soviet Union and the wider international communist movement. Through original archival research, this book considers the ways in which the Soviet leadership reacted to the crisis, the tools at its disposal,