Political instability within Southern Arabia contributed to frequent international armed conflict from the 1940s through the 1970s. The United Kingdom intervened within her South Arabian protectorates in 1947-1950 (14.1) and again in 1953-1959 (14.3) as well as within Aden in 1947 (14.2) and within Oman during the late 1950s (14.5). She also helped to seize the Buraimi Oasis from Saudi Arabia in 1955 (14.4). The Yemen-Aden War of the 1960s (14.6) represented the region's most serious conflict; at the end the United Kingdom abandoned Aden and the South Arabian protectorates in favor of the new state of South Yemen. The Dhofar rebellion followed within Oman (14.9). Conflict among North Yemen, South Yemen and Saudi Arabia punctuated the period from 1969 to 1979 (14.7, 14.8, 14.10, 14.11, 14.12, 14.13).