History has vividly documented that the stability of Northeast Asia depends on the condition of Russo-Japanese relations. Russia and Japan share a long, turbulent record of cultural, economic, and political rivalry. Moreover, the two countries have fought each other four times in the last eighty years; the most recent in the latter stages of World War Two, and yet, Japan still has not signed a peace treaty with the Soviet Union.
Giblin, James F. Jr.
"National Strategies and Japan's Northern Territories,"
Naval War College Review: Vol. 40
, Article 8.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol40/iss1/8