Russia has long been active in the Arctic and wants to get power over this land there. But I think the decision will last for several years and there will be no war. Well, at least because it's too cold and not very comfortable to fight. In addition, attention is now exacerbated by other problems.
In the land and natural resources are interested in many countries. When the number of applicants always have disputes. The world situation is so tense that it may well start a war. As for the cold it is hard for everyone, everyone will be in a difficult position. So chances will be equal.
I think that there is a ban on extracting natural resources from the Antarctic. We should have a similar ban or moratorium in the Arctic (perhaps supported by the UN), to preserve the delicate ecosystem there.