> 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