This article is trying to through some light on the role of geology in solving some political debate using the Tiran and Sanafir Islands, the northern Red Sea as a case study. The author used the analyses of space images, tectonic history of the opening of the Red Sea and East Africa Rift, features on topographic and bathymetric maps of the Red Sea Region to clarify dependency of Tiran and Sanafir islands to the Kingdom of Saudi Arabia or the Arab Republic of Egypt. Also, the author inspected some official documents between the two countries which related to the same subject.Evidence from the analyzed space images and topographic and bathymetric maps indicated that Tiran and Sanafir Islands are a part of the Arabian continental shelf and these islands are really Saudi Arabia land.