South Georgia and the South Sandwich Islands sovereignty dispute

British sovereignty of South Georgia and the South Sandwich Islands is disputed by Argentina. The United Kingdom claimed South Georgia in 1775 (at the time it was the Kingdom of Great Britain), annexed the islands in 1908, and has exercised de facto control with the exception of a brief period during the Falklands War in 1982, when the islands were partially controlled by Argentina.

Source: Wikipedia — South Georgia and the South Sandwich Islands sovereignty dispute (CC BY-SA 4.0)