I think this is it.
Someone in their circles, must have ran a 2050 war game where america because it was split between interests in europe and asia, missed a fleet go through the northwest passage for a sneak attack, defeating america.
Hence securing Greenland, the Canal, and Canada. Worries about floatillas of Chinese ships off of Greenland.
In addition, Trump despite having a business degree, has internalized everything as real estate seller to purchaser, or supplier to client. One off interactions, zero sum games.
We're now into the danger phase. An 80% majority of people earlier said they were willing to endure any price to remain sovereign. We will see whether that is true.