the Northern Territories, the southern Kuril Islands - a group of islands administered by Russia, claimed by Japan.

many years

(used with negatives) for a long time

many years / a long lifespan

discussion / dispute, argument / debate

discuss / to argue, to dispute / to debate

question, problem on homework etc. / a question; a matter (of time etc.) / a problem (something that needs to be dealt with); a trouble / an issue; a matter

Russia

Russian person / Russian people

Russian language