[1] During the coup attempt, Imam Yahya Muhammad Hamid ed-Din, the ruler of the kingdom, was assassinated and the rival Sayyid family, the al-Wazirs, seized power for several weeks.

On 30 October 1918, amidst the dissolution of the Ottoman Empire, Imam Yahya Muhammad Hamid ad-Din of the al-Qasimi dynasty declared northern Yemen an independent state.

In 1926, Imam Yahya declared himself king of the Mutawakkilite Kingdom of Yemen, becoming a temporal as well as a (Zaydi) spiritual leader, and won international recognition for the state.

In the early 1930s, Saudi forces retook much of these gains in the Saudi–Yemeni War of 1934, before withdrawing from some of the area, including the southern Tihamah city of Al Hudaydah.

However, the Hamidaddin dynasty was overthrown the same year in a coup d'état by revolutionary republican army officers led by Abdullah al-Sallal.