The defense of Greenland is essential for NATO. It is
regulated in a 1951 agreement between Denmark and the United
States. Military territory is Greenland part of Denmark with
a Danish commander. Operationally, it is part of NATO's
Atlantic Command (SACLANT).
In addition to two now-defunct US bases (Thule Air Force
Base and Søndre Strømfjord) (2008), seven large radar
stations are grouped on the island, primarily to provide the
US defense with warning in robotic and aerial attacks over
the Arctic Ocean. As with Denmark in the rest, nuclear
weapons must not be found on the island during peacetime.
The United States has 136 people from the Air Force
stationed in Greenland.