طنب الكبرى
The seizure of Abu Musa and the Greater and Lesser Tunbs by the Imperial Iranian Navy took place on , shortly after the withdrawal of British forces from the islands of Abu Musa and the Greater and Lesser Tunbs, all located in the Strait of Hormuz between the Persian Gulf and the Gulf of Oman. The Imperial State of Iran had claimed sovereignty over both sets of islands, while the Emirate of Ras al-Khaimah claimed the Greater and Lesser Tunbs and the Emirate of Sharjah claimed Abu Musa,