Japan and the United States have had military ties, called the Japan and the U.S. Security Treaty, for almost 60 years, which allows the U.S. military to stay in Japan. The problem is 75% of the bases are concentrated in Okinawa, the southern small island prefecture. In fact, Okinawa experienced a very tragic history during WWII, with many of the residents being victimized. Now after the war was over, they are still suffering from military existence day and night.
The base issue in Okinawa has been there for 60 years, but suddenly it has got media attention since the new government led by the Democrats won the election and tried to keep their campaign pledge to alleviate the suffering of Okinawa people.
The Japan Times: an opinion column by Gregory Clark “U.S. base problem drags on.” (you can find the link to Japanese translation on the bottom of the article.)
This is a big issue and commenting in English can be really challenging… However, I think it is worth thinking and discussing.