I was confused at first why would Dmitry Medvedev make a comment like this, as this would be a potential nuisance for Russia in the Arctic. Then I realized, the EU would never allow Greenland to fall into American hands without a fight, or at least a major falling out politically. If the Russians encourage the Americans in this regard, it will drive an even bigger wedge between the Americans and the EU. Europe is the real prize here, not Greenland.
https://x.com/MedvedevRussiaE/status/1873336312859955425