The U.S. and its NATO allies, primarily the U.K., Canada and Norway, have been expanding military presence in the Arctic region for decades. (The addition of Sweden and Finland to NATO has been enormous in terms of NATO's Arctic military presence and security). The expansion really began in the late 1990s when the U.S. Pentagon (DOD/DOW) determined, before most others (and contrary to what many idiots still believe), that climate change was going to open up the Arctic to commercialization as well as corresponding military security concerns.
Contrary to MAGA belief, Trump was not the first person to look at a globe and notice the location of Greenland in the Arctic region, and he was not the first one to draw up a map of possible Russian missile trajectories. There were many others before him, including the defense departments of the US (Pentagon) and most NATO allies, which have drawn up plans and assessments regarding Arctic military security for many years now. NATO has agreed and re-agreed continuously and going back many years to continue Arctic military and security initiatives.
Recent political hype and sensationalism regarding Greenland has been (1) based on fake premises and target audience ignorance (2) very detrimental to America's relationships with key allies, (3) detrimental to American business and (4) foolish spectacle.