Imams of Yemen in the context of "Imam"

The North Yemen civil war, also known in Yemen as the 26 September Revolution, was a civil war fought in North Yemen from 1962 to 1970 between partisans of the Mutawakkilite Kingdom and supporters of the Yemen Arab Republic. The war began with a coup d'état carried out in 1962 by revolutionary republicans led by the army under the command of Abdullah al-Sallal. He dethroned the newly crowned King and Imam Muhammad al-Badr and declared Yemen a republic under his presidency. His government abolished slavery in Yemen. The Imam escaped to the Saudi Arabian border where he rallied popular support from northern Zaydi tribes to retake power, and the conflict rapidly escalated to a full-scale civil war.

On the royalist side, Jordan, Saudi Arabia, and Israel supplied military aid, and Britain offered covert support. The republicans were supported by Egypt (then formally known as the United Arab Republic or UAR) and were supplied warplanes from the Soviet Union. Both foreign irregular and conventional forces were also involved. Egyptian President Gamal Abdel Nasser supported the republicans with as many as 70,000 Egyptian troops and weapons. Despite several military actions and peace conferences, the war sank into a stalemate by the mid-1960s. Egypt's commitment to the war is considered to have been detrimental to its performance in the June 1967 Six-Day War against Israel. Once the Six-Day War began, Nasser found it increasingly difficult to maintain his army's involvement in Yemen and began to pull out his forces. The surprising removal of Sallal on November 5 by Yemeni dissidents, who were supported by republican tribesmen, resulted in an internal shift of power in the capital, as the royalists were approaching from the north.

Islam came to Yemen around 630 during Muhammad's lifetime and the rule of the Persian governor Badhan. Thereafter, Yemen was ruled as part of Arab-Islamic caliphates, and became a province in the Islamic empire.

Regimes affiliated to the Egyptian Fatimid caliphs occupied much of northern and southern Yemen throughout the 11th century, including the Sulayhids and Zurayids, but the country was rarely unified for any long period of time. Local control in the Middle Ages was exerted by a succession of families which included the Ziyadids (818–1018), the Najahids (1022–1158), the Egyptian Ayyubids (1174–1229) and the Turkoman Rasulids (1229–1454). The most long-lived, and for the future most important polity, was founded in 897 by Yayha bin Husayn bin Qasim ar-Rassi. They were the Zaydis of Sa'dah in the highlands of North Yemen, headed by imams of various Sayyid lineages. As ruling Imams of Yemen, they established a Shia theocratic political structure that survived with some intervals until 1962.

The Qasimid State (Arabic: الدولة القاسمية), also known as the Imamate of Yemen, was a state in South Arabia which was ruled by the Imams of Yemen. It was founded by Imam al-Mansur al-Qasim in 1597, absorbed much of the Ottoman-ruled Yemen Eyalet by 1628, and then completely expelled the Ottomans from Yemen by 1638. The Qasimid State continued to exist into 18th and 19th century, but gradually fractured into separate small states. The most notable of those states was the Sultanate of Lahej; most of those states (except Lahej) were submitted by the Ottomans and incorporated into the restored Ottoman province of Yemen Eyalet in 1849.

The Sulayhid dynasty (Arabic: بَنُو صُلَيْح, romanized: Banū Ṣulayḥ, lit. 'Children of Sulayh') was an Ismaili Shi'ite Arab dynasty established in 1047 by Ali ibn Muhammad al-Sulayhi that ruled most of historical Yemen at its peak. The Sulayhids brought to Yemen peace and a prosperity unknown since Himyaritic times. The regime was confederate with the Cairo-based Fatimid Caliphate, and was a constant enemy of the Rassids - the Zaidi Shi'ite rulers of Yemen throughout its existence. The dynasty ended with Arwa al-Sulayhi affiliating to the Taiyabi Ismaili sect, as opposed to the Hafizi Ismaili sect that the other Ismaili dynasties such as the Zurayids and the Hamdanids adhered to.

Yahya Muhammad Hamid ed-Din (18 June 1869 – 17 February 1948) (or Imam Yahya) was the first king of the Mutawakkilite Kingdom of Yemen from 1918 until his assassination in 1948. He became Imam of the Zaydis, a branch of Shia Islam, in 1904 after the death of his father, Muhammad Al-Mansur, and Imam of Yemen in 1918. His name and title in full was "His Majesty Amir al-Mu'mimin al-Mutawakkil 'Ala Allah Rab ul-Alamin Imam Yahya bin al-Mansur Bi'llah Muhammad Hamidaddin, Imam and Commander of the Faithful" (the Prince of the Believers, He who Relies on God, the Lord of the Universe).

Yahya Muhammad Hamid ed-Din was born on Friday 18 June 1869 in Sanaa into the Hamidaddin branch of the al-Qasimi dynasty who ruled most of Yemen proper and the southern region of present-day Saudi Arabia for over 900 years. When Yahya became Imam, he effectively ruled over the mountainous areas of what will be North Yemen. However, the Ottomans who made claims in the area did not recognize the rule of the Imams of Yemen since their entry into the region. He spent the early years of his reign attempting to expel the Ottoman presence, who withdrew only after their defeat in World War I.