HOWEVER, I don't think it will come to any long lasting rift with Europe, or Greenland... For these reasons:
1) U.S.A. already has a huge AF Base in northern Greenland, and can, & probably WILL, expand America's footprint there at will, or as required.
2) Europe and the Netherlands have NO INTEREST in sending troops to defend Greenland, as could be seen by the 30 unequipped troops they sent there after trumps initial notification (with NO equipment) and simply to essentially ACKNOWLEDGE Trumps message, and to "CONDONE" U.S.A.'s judgement (regarding action) if Russia and/or China try anything...without "actually" giving in !
3) He's floating the idea TO THE WORLD of "Giving America GREATER control of Greenland", for the benefit of Russia and China... and essentially saying... DON'T try anything... WE'RE HERE, WE KNOW you want to be here, WE'RE staying.... and YOU? ...YOU'RE NOT WELCOME !
4) If Russia or China actually try anything... America will ALREADY BE THERE... and Greenland & Europe will be GLAD !
READ Trumps BOOK, the ART of the DEAL... he's MAXIMIZING his influence TODAY, and COMMUNICATING IT everyone who might be interested, in order to PREVENT and /or NULIFY a conflict TOMORROW !
AMERICA, and AMERICANS, NEED to WAKE up… There is NOTHING “Democratic” about the CURRENT American “Democrat Party”! THEY are more an amalgamation of Totalitarian Marxists, Socialists, Communists, and Globalists… who are BENT on TAKING, and then KEEPING power... & where ultimately the American PEOPLE will have NO SAY AT ALL in how we are GOVERNED... and our "Democracy" will be DEAD!!