Saudi Arabia

The Arabian Peninsula has been inhabited since prehistoric times and lay at the crossroads of trade routes linking the ancient Mediterranean, Mesopotamia, and the Indian Ocean world. The northwest of the modern kingdom contains the rock-cut tombs of Hegra, capital of the Nabataean south and a UNESCO-listed site, while the southern and eastern coasts hosted incense-trade kingdoms such as Lihyan and Dilmun-linked settlements in the Eastern Province. Pre-Islamic Arabia was organised around tribal confederations, oasis towns such as Yathrib and Najran, and the Hejazi commercial centre of Mecca, which by the sixth century CE was a regional pilgrimage and trading hub.

The decisive transformation came in the early seventh century with the prophetic mission of Muhammad in Mecca and Medina. After his death in 632, the Rashidun caliphs unified the peninsula and launched the conquests that carried Islam across the Near East and North Africa. Although the political centre of the Islamic world shifted successively to Damascus under the Umayyads, Baghdad under the Abbasids, and later Istanbul under the Ottomans, the holy cities of Mecca and Medina retained enduring religious primacy. From the tenth century onward much of the Hejaz was governed by the Sharifs of Mecca, while interior Najd remained a patchwork of tribal emirates loosely under Ottoman or local control.

The first Saudi state emerged in 1744, when the Najdi emir Muhammad ibn Saud of Diriyah formed a pact with the religious reformer Muhammad ibn Abd al-Wahhab. This polity expanded across central Arabia until Egyptian forces acting for the Ottoman sultan destroyed Diriyah in 1818. A second Saudi emirate, centred on Riyadh, rose and fell during the nineteenth century before being extinguished by the rival Al Rashid in 1891. The modern state dates to 1902, when Abdulaziz ibn Saud recaptured Riyadh and began three decades of campaigning that absorbed Hasa, Asir, the Hejaz (with Mecca and Medina, taken from the Hashemites in 1925), and the remaining Najdi territories. On 23 September 1932 the conquered lands were unified by royal decree as the Kingdom of Saudi Arabia.

The discovery of commercial oil at Dammam in 1938, exploited through the Arabian American Oil Company, reshaped the kingdom from a poor pilgrimage economy into a major energy producer, a process accelerated after the Second World War by the founding partnership with the United States. Successive sons of Abdulaziz, beginning with Saud in 1953 and continuing through Faisal, Khalid, Fahd, Abdullah, and Salman, presided over rapid urbanisation, the 1960 co-founding of OPEC, the 1973 oil embargo, and the consolidation of a welfare state funded by hydrocarbons. The seizure of the Grand Mosque in 1979 and the regional shocks of the Iran-Iraq War, the 1990 to 1991 Gulf War, and the post-2001 confrontation with jihadist networks each prompted recalibrations of internal security and clerical authority.

Since the accession of King Salman in 2015 and the elevation of his son Mohammed bin Salman as crown prince in 2017, the kingdom has pursued the Vision 2030 programme of economic diversification, partial social liberalisation, and an assertive regional policy including the war in Yemen and the 2023 normalisation with Iran. Saudi Arabia today is an absolute monarchy governed by the Al Saud dynasty under a Basic Law that designates the Quran and the Sunna as the constitution, with executive, legislative, and judicial authority exercised by the king in council with appointed ministers and the consultative Majlis al-Shura.