US could just threaten to withdraw from NATO if it can't get Greenland. What then will remain of NATO that can defend itself from Russia and China? Besides the US, only the UK and France have nukes.
Seems a bit subtle when Trump could just send invading troops and see how it pans out (assuming that the military remains loyal to him). That could then lead to NATO kicking out USA, so what would threatening to do it achieve?
At this point, I don't think anyone in NATO thinks the US will aid them if anything were to happen so the US is kinda out of NATO anyway (at least until Trump/MAGA is gone).
