After the events triggered in Japan on March 11, 2011, renewed public and political awareness of much bigger tectonic risks may last long enough and, among Japan's decision makers, provide for a national paradigma change. This would seem to entail a fundamental revision of national priorities and reorientation of foreign policies, seeking above all to secure Japan's survival as a political entity - even on foreign territory.
In the case of the Russian Federation, cooperation and long-term lease formulas would be called for which would reliably meet the long-term legitimate interests of both partner states. Concretely, this might involve a renewable 99-year Russian lease of the disputed Kuril Islands - in exchange for a a renewable 99-year lease of a Russian territory which must be suitable for development and accomodation of a survival-guaranteeing large segment of Japan's population, economy and civil society.
To this end, suitable third parties might explore rendering related good offices to both the Russian and Japanese authorities, including necessary research.
Kuril islands dispute between Russia and Japan, BBC, 1 November 2010 Last updated at 11:27 GMT
Russian President Dmitry Medvedev orders more arms on disputed Kuril islands, ningbo.com, 10 Feb 2011
Russian (Sergei Lavrov) & Japanese (Seiji Maehara) Leaders Meet On Kuril Islands Dispute, Voice of America, February 11th, 2011 at 8:55 am UTC
Video: Backgrounder: Importance of Southern Kuril Islands, cntv.cn, 02-12-2011 09:59 BJT
Tsunami waves reach Kuril Islands, AFP, Khaleej Times, 11 March 2011, 10:21 AM
The Tokai Earthquake of 20xx, about.com, Andrew Alden