History
The south lay on the incense road north from Yemen, and Najran was one of its great oases. By the 6th century it had a large Christian community, which was massacred around 523 by the Himyarite king Dhu Nuwas; the ruins of the old city at Al-Ukhdood are linked by tradition to the "People of the Ditch" in the Qur'an. The highlands of Asir and Al Bahah were home to settled farming tribes who terraced the mountain slopes and built fortified stone and mud villages.
For centuries the region was contested between Yemen's rulers, the Sharifs of Mecca, the Ottomans and local chiefs. In the early 20th century Muhammad al-Idrisi founded an emirate based at Sabya in the Tihama, while the Saudis extended their rule over highland Asir in the 1920s. The Idrisi state accepted Saudi protection in 1926 and was absorbed soon after, and a short war with Yemen ended in the Treaty of Taif of 1934, which left Asir, Jazan and Najran in Saudi hands. The border was finally fixed in the Treaty of Jeddah in 2000.
Development came late, with roads, airports and the city of Khamis Mushait growing around a major air base. Since 2015 the war in Yemen has made the southern border a front line, with cross-border fighting and Houthi attacks on its towns.
