Egypt gained full independence in 1922, and in 1956 the Anglo-Egyptian condominium was terminated with Sudan becoming independent.[1] At that point the 1902 agreement remained in force, however in 1958 Egypt re-asserted the 1899 boundary, a move protested by Sudan.[2][3] After a brief show of force Egyptian forces withdrew from the region, and the dispute thereafter lay dormant. In 1959 Egypt and Sudan signed a treaty which paved the way for Egypt to create the Aswan Dam, which had the knock-on effect of flooding much of the Wadi Halfa salient under Lake Nasser.[3]