> If the American press had given me 20 minutes of airtime I could have convinced everyone they don’t want to get involved with Greenland.

On one hand the author recognizes the scope of the “protocol wars” as a rational thing being irrelevant in the actually relevant time span. On the other hand, the author swears that they can bring rationality to a deeply emotional matter through discourse.

you are aware that he doesn't actually believe that he "[...] could have convinced [..]"

it's a manner of speech

a instrument of telling a story

a way to express how completely absurd "US getting involved into Greenland" is for anyone who understands the land (geography/weather) and people even unrelated to geopolitical aspects like alienating allies

My argument stands whether the author meant to be read literally or not. Below the surface it’s still about the tension of rationality and irrationality within social settings.