This is because Russia and Japan have not yet signed a peace treaty. Until today, they are still fighting over the Kuril Islands.

Complete source list - Platypus Facts — Questions Answeredhttp://en.wikipedia.org/wiki/Platypus http://australianmuseum.net.au/platypus http://www.bbc.co.uk/nature/life/Platypus http://kids.sandiegozoo.org/animals/mammals http://www.birdsnways.com/wisdom/ww32eiv.htm http://www.livescience.com/27572-platypus.html http://www.ucmp.berkeley.edu/mammal/monotreme.html http://www.animalfactguide.com/animal-facts/platypus/ http://www.platypus.asn.au/historical_background.html http://animals.nationalgeographic.com/animals/mammals/platypus/ http://www.ansci.wisc.edu/jjp1/ansci_repro/misc/project_websites_fa06/wed06/Platypus/cycle.htmFor more Questions and Answers Articles, click here... 

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