Trump still would like to add Canada and Greenland but says attack on Canada ‘highly unlikely’

Well duh. What he means is:

• Greenland yes, as it's a largely undefended territory except for american forces already there. And let's face it, it's still uncertain what Europe and most of NATO would do in response, apart from strong-worded letters of condemnation. Which has precisely 0 effect on a sociopath like Trump.
• As for Canada not yet, because it can defend itself. Maybe after a bit of slow Russia-style political destabilization in order to weaken it, then they attack.

The art of the coward. Nothing short of a swift kick to the 'nads will stop a savage and animalistic neanderthal. They can't be reasoned with, and while it's a sad reality, it's still a reality.