Unification of Saudi Arabia
The unification of Saudi Arabia was a military and political campaign in which the various tribes, sheikhdoms, city-states, emirates, and kingdoms of most of the central Arabian Peninsula were conquered by the House of Saud. Unification started in 1902 and continued until 1932, when the Kingdom of Saudi Arabia was proclaimed under the leadership of Abdulaziz, known in the West as Ibn Saud, creating what is sometimes referred to as the Third Saudi state. This process was a territorial evolution of Saudi Arabia that began with the recapture of Riyadh and ended with the establishment of the modern kingdom.
Historical Background and Early Campaigns
The House of Saud had been in exile in the British-protected Emirate of Kuwait since 1893, following their second removal from power and the dissolution of their polity by the Rashidi dynasty rulers of the Emirate of Jabal Shammar, allies of the Ottoman Empire. In 1902, Ibn Saud returned to Najd and recaptured Riyadh, the former capital of the House of Saud. He subsequently consolidated control over much of the Arabian Peninsula, subjugating the remainder of Najd and seizing Al-Hasa from the Ottoman Empire.
Between 1913 and 1925, the campaign continued with the conquering of the Emirate of Jabal Shammar and the Hejaz from the Kingdom of Hejaz, which was home to the Muslim holy cities of Mecca and Medina. This led to a decisive Saudi victory and the end of the Rashidi dynasty and exile of Hashemites.
Territorial Evolution and Proclamation
The resulting state was known as the Kingdom of Hejaz and Nejd from 1926 until it was renamed the Kingdom of Saudi Arabia in 1932. Significant territorial changes occurred during this period, including the Saudi takeover of central and northern Arabia. Specifically, under the Uqair Protocol of 1922, approximately 68% of Emirate of Kuwait territory was ceded to the Third Saudi state. The proclamation and establishment of the Kingdom of Saudi Arabia in 1932 marked the formal unification of these domains.
The Saudi–Yemeni War
Two years later, in 1934, following the formal conclusion of the unification, the Kingdom of Yemen launched a war against the Kingdom of Saudi Arabia. Saudi forces emerged victorious, ending Yemeni claims to the southern provinces. Consequently, Asir, Najran, and Jazan became provinces of Saudi Arabia following the Saudi–Yemeni War in 1934.
Summary of Campaign Phases
| Phase | Dates | Key Locations and Outcomes |
|---|---|---|
| First phase | 13 January 1902 – 23 September 1932 | Najd, Al-Hasa, Jabal Shammar, and Hejaz incorporated; Proclamation of the Kingdom. |
| Second phase | 20 March 1934 – 14 June 1934 | Saudi–Yemeni War; Asir, Najran, and Jazan became Saudi provinces. |
Belligerents and Leadership
The military campaign involved several key forces and leaders:
- Third Saudi state: Led by Ibn Saud, supported by the House of Saud, Saudi Arabian Army, and Ikhwan (until 1929).
- Opposing Emirates: Emirate of Jabal Shammar, Kingdom of Hejaz, and Kingdom of Yemen.
- International Support: The Saudi state was supported by the United Kingdom, Soviet Union, and Italy at various stages, while Jabal Shammar was supported by the Ottoman Empire and Germany.