Kuril Islands were stolen from Japan by the Soviets (USSR – communist) after World War Two and are currently occupied by the Russians. Recently Russian war planes violated Japanese airspace. For a short history of the Kuril Islands dispute see the video link below.
To China and Russia: Domo arigato gozaimasu !!!
Japan has a formable military and can easily challenge the aggression from China and Russia. China’s only military experience is killing their own unarmed people in Tibet and East Turkistan (Xinjiang). The Russian military recently when they invaded the European nation of Georgia in 2008 (during the summer Olympics in Beijing) shocked the world with the lack of professionalism and chaos by the Russians.