>all it has to do is to increase the number of troops
Demonstrably wrong as Trump announced tariffs on the countries sending troops to Greenland.
Which more than well illustrates the absurd claims that the US needs Greenland because Europe places too little military power there.
I think the above poster was trying to say, "there is no reason" for the US to claim Greenland. We have a treaty that allows us to build our military bases on the territory. If we want to do security stuff there, we already can.