Jonathan Haslam 
Soviet Union and the Threat from the East, 1933-41 [PDF ebook] 
Volume 3: Moscow, Tokyo and the Prelude to the Pacific War

This is the third in a series of volumes detailing the history of Soviet foreign policy from the Great Depression to the Great Patriotic War. It covers Soviet policy in the Far East from the Japanese rejection of a non-aggression pact in January 1933 to the conclusion of a neutrality pact in April 1941. During the course of that period the Soviet Union moved from being the vulnerable and isolated suitor to a position of negotiation from strength.