US President Trump says, regarding Greenland, that he has respect for Greenland and Denmark. However, no nation/group of nation is in any position to secure Greenland, except for the US.

Greenland

• The area is a core strategic interest of the US.
• Need Greenland for strategic national security.

China/Russia

• Says the defensive systems in Venezuela were made by China and Russia, and after the US operation those nations will perhaps "need to go back to the drawing board".