Greenland has enough bases and permanent troops to support NATO operations and deter Russian threats as Denmark’s multi-billion-dollar push to strengthen defenses in the Arctic remains in its early stages, said the Nordic country’s top military commander on the territory. Soren Andersen, head of the Joint Arctic Command in Greenland, said the region’s primary security challenge is tracking Russian and Chinese submarine activity in the GIUK gap, a strategic North Atlantic chokepoint, a task that relies more on surveillance and monitoring capabilities than additional troops on the ground.