Thank you for a great piece (Spectrum, April 5) on the Norwegian trainers teaching Nato soldiers how to fight in the Arctic. It brought back fond memories of my own military service. However, I ...

The U.S. military is bracing for the possibility that it may have to fight a literal cold war, and there are concerns that the perishable skills needed to succeed in that environment have expired.

More than half the Arctic's coastline is Russian territory and in the last six years Moscow has built more than 475 military bases along its northern border.