The United States will gain a base for anti-submarine operations near the GIUK gap, between Greenland, Iceland and the United Kingdom, under the September 22 agreement with Denmark and Greenland, Troy Bouffard, director of the Center for Arctic Security and Resilience, told Sputnik.

The agreement includes Narsarsuaq as an air bridge and a base on the western edge of the gap and a smaller installation at Mestersvig, for radar and communications.