1966 Dhabyani coup d'état
1966 CE.
Shown on the map at 25.500°, 54.500°.
On August 6, 1966, Zayed Al Nahyan, the younger brother of ruling Sheikh of Abu Dhabi Shakhbut Al Nahyan, staged a bloodless palace coup with direct military assistance from the United Kingdom, then Abu Dhabi's colonial overlord via the Trucial States.
Text from the Wikipedia article 1966 Dhabyani coup d'état, licensed CC BY-SA 4.0.