The Northern Territories (so-called by Japan) have been under Soviet/Russian control since the failure of a Joint Declaration in 1956. All it takes for Japan to regain full control is the declaration that No US bases would be built there. Apparently, Japan cannot say that without the permission of the United States. (bad time for 100% tariffs).
At least one Japanese legislator is growing weary of the predicament. And we do not care since Japan is our bitch anyway, ever since Pearl Harbor.
https://en.wikipedia.org/wiki/Kuril_Islands_dispute
