Sovereign bases are exclaves under the full sovereignty of a remote state, typically established through treaties, for the purpose of securely maintaining military installations outside the state's main national territory.
American sovereign bases have been suggested as a part of the solution to the Greenland crisis, dispensing with the need to ask permission from Denmark although there are concerns that this is not a stable solution. Other overseas military installations have been compared to sovereign bases, such as Guantanamo Bay, Mayotte and Diego Garcia.
Hadjigeorgiou, Nasia (2021). "Sovereign Base Areas (SBA)". Oxford Encyclopedia of Public International Law. Oxford University Press. Retrieved 24 January 2026.
Loucaides, Darren (1 May 2017). "Why are there still British military bases in Cyprus?". New Internationalist. New Internationalist. Retrieved 24 January 2026. Arguably, the only other territory with a comparable status is the US base at Guantánamo Bay in Cuba.
Stringer, Connor (21 January 2026). "Revealed: Trump's Greenland deal". The Telegraph. Telegraph Media Group. Retrieved 24 January 2026.