I see we've moved from the 'he's just meme'ing, he/we know it's stupid, it's not real' to 'here's why this is 4d chess and actually good'.
Edit: Since I'm throttled... Trump has been talking about Greenland since 2019, before he was surrounded with the current crop. Good try at keeping the 4D chess con going though.
I don't believe Trump has much of any idea of the larger stakes. But, he's surrounded by people who do, and Trump has a pattern of being a voicebox for whatever was said by the last person who talked to him.