Agreed if it is truly only about a weapons system and a weapons system only. My guess is he could have made an official agreement on that with Denmark without alerting anybody. Historically, up to the point where the USA started alienating itself from its neighbors, allies, and NATO, In terms of security, what was good for USA, would have been exceptionally good for Denmark. So I have no clue why an official agreement couldn't have been penned behind closed doors and nobody would have been the wiser. Trouble is what we are being told, and what actually is reality are most times not in alignment. Fear, national security, Russia, and China sell really well. But it ultimately could be about Greenland's natural resources. As in the case of Venezuela, I'm not convinced we went into and attacked a sovereign nation, captured its leader (never to be seen again), and took control of its government because of narcotics. It was probably a good enough reason to resonate with most people here such that they wouldn't question it.
I don't know what you think of Mark Carney, but I respect his leadership and I think is presentation at Davos was brilliant. Its refreshing to see an actual technocrat in the most important position of a country. I don't know when, if ever, that has been the case here but certainly not since WWII. I would say in modern times the closest we ever got was Ross Perot.