That's about 3x Texas + California combined. That's not even counting the northern half (give or take) of Canada's other provinces. Russia's Sakha Republic is ~3 million km2 by itself. If Sakha were a country of its own, it would still be in the Top10 by area (#8), just below India.

It's not just how they look on a map, these are potentially hugely underutilized tracts of land. All I'm saying is instead of the constant doom-and-gloom prognostications, let's figure out how we can maximize the efficient utilization of this land that MIGHT actually benefit from improved accessibility under warmer conditions.