At the end of the 20th century, relations between Japan and Russia remained cool because of

ARussian troops stationed on Japan s Kuril Islands.
Bdisputed ownership of the Kuril Islands.
Cfailure of arms talks.
DRussia s charges of Japanese war crimes.

Verified Answer :

At the end of the 20th century, relations between Japan and Russia remained cool because of disputed ownership of the Kuril islands. The correct option among all the options that are given in the question is the second option or option "b". This relationship continued between the two countries because of a common interest.