Trump has ordered U.S. special forces to draft invasion plans for Greenland, but senior military leaders say it would be illegal and lack Congressional backing, according to the Daily Mail.

* Stephen Miller and hardline advisers, emboldened by the Maduro operation, are pushing to move before Russia or China can act in the Arctic.

* British and European officials warn a move on Greenland could destabilize NATO, with the July 7 NATO summit seen as a potential turning point.

* Officials are also discussing alternative options, including pressure on Denmark or expanded U.S. military access to Greenland.