"The Spitsbergen Treaty of 1920 recognizes Norwegian sovereignty, and the 1925 Svalbard Act made Svalbard a full part of the Kingdom of Norway. They also established Svalbard as a free economic zone and a demilitarized zone."
and
"Svalbard is a demilitarized zone, as the treaty prohibits the establishment of military installations. Norwegian military activity is limited to fisheries surveillance by the Norwegian Coast Guard. The treaty requires Norway to protect the natural environment."
"The Spitsbergen Treaty of 1920 recognizes Norwegian sovereignty, and the 1925 Svalbard Act made Svalbard a full part of the Kingdom of Norway. They also established Svalbard as a free economic zone and a demilitarized zone."
and
"Svalbard is a demilitarized zone, as the treaty prohibits the establishment of military installations. Norwegian military activity is limited to fisheries surveillance by the Norwegian Coast Guard. The treaty requires Norway to protect the natural environment."