Japan has an unhealthy relationship with the U.S. and should reclaim its "political sovereignty," American film director Oliver Stone said in a recent interview.

A staunch anti-war critic who has directed a number of war and political films, the 66-year-old Stone called the U.S. relationship with Japan "corrupt" and "disgusting," arguing that the current dynamics of the relationship leave the nation at the mercy of American whims.

"You (Japan) are really in bed with us (the United States) and you are in bed in a very strange way because you have economic power, but you don't seem to have political sovereignty," Stone said. "I believe that if the Japanese can free themselves from the U.S. interests, they would be a regional force for good in the world."