Resolving the disagreement over the Kuril Islands requires addressing whether the post-war administration constitutes legal sovereignty or an occupation. One primary mechanism involves the application of the principle of legitimate expectation under international law. This focuses on whether the legal status of the islands was clearly established by the outcome of World War II treaties or if there remain unresolved ambiguities regarding territorial boundaries.
Another approach involves the application of the principle of effectiveness. This looks at whether the continuous exercise of administrative control creates a legal reality that overcomes historical claims. However, courts and diplomats often look to the United Nations Charter, which prohibits the use of force to acquire territory. A core part of the debate is whether the 1945 agreements explicitly transferred ownership or merely granted administrative rights for the duration of the conflict.
Finally, bilateral treaty negotiations remain the most common practical tool. Rather than relying on contested historical precedents, the two nations can create a new legal reality through a negotiated settlement. This would involve defining specific maritime boundaries and fishing rights to address the immediate economic concerns of both sides while bypassing the unsolvable historical debate.
