This is the reason. This is probably DoD-instigated, not Trump's idea. We'd likely see this same policy under other leadership, especially if it were Republican

This is the reason. This is probably DoD-instigated, not Trump's idea. We'd likely see this same policy under other leadership, especially if it were Republican. The posturing on Greenland is also coming out of the DoD. The Trump admin isn't thinking thirty years ahead for when the North Sea becomes a primary transit corridor. This is all internal war gaming.