Saudi Arabia is one of the top leaders in military spending? Are they preparing for an eventual war between Sunni and Shiites?

The majority of the world’s Muslim population follows the Sunni branch of Islam, and approximately 10-15% of all Muslims follow the Shiite (Shi’ite, Shi’a, Shia) branch. Shiite populations constitute a majority in Iran, Iraq, Bahrain, and Azerbaijan. There are also significant Shiite populations in Afghanistan, Kuwait, Lebanon, Pakistan, Saudi Arabia, Syria, and Yemen. Sunnis and Shiites share most basic religious tenets. However, their differences sometimes have been the basis for religious intolerance, political infighting, and sectarian violence.

The differences between the Sunni and Shiite Islamic sects are rooted in disagreements over the succession to the Prophet Muhammad, who died in 632 AD, and over the nature of leadership in the Muslim community. The historic debate centered on whether to award leadership to a qualified, pious individual who would follow the customs of the Prophet or to transmit leadership exclusively through the Prophet’s bloodline. The question was settled initially when community leaders elected a companion of the Prophet’s named Abu Bakr to become the first Caliph (Arabic for “successor”). Although most Muslims accepted this decision, some supported the candidacy of Ali ibn Abi Talib, the Prophet’s cousin and son-in-law, husband of the Prophet’s daughter Fatima. Ali had played a prominent role during the Prophet’s lifetime, but he lacked seniority within the Arabian tribal system and was bypassed.
This situation was unacceptable to some of Ali’s followers, who considered Abu Bakr and the two succeeding caliphs (Umar and Uthman) to be illegitimate. Ali’s followers believed that the Prophet Muhammad himself had named Ali as successor and that the status quo was a violation of divine order. A few of Ali’s partisans orchestrated the murder of the third Caliph Uthman in 656 AD, and Ali was named Caliph. Ali, in turn, was assassinated in 661 AD, and his son Hussein (680 AD) died in battle against forces of the Sunni caliph. Ali’s eldest son Hassan (d. 670 AD) is also revered by Shiite Muslims, some of who claim he was poisoned by the Sunni caliph Muawiyah.
Those who supported Ali’s ascendancy became later known as “Shi’a,” a word stemming from the term “shi’at Ali,” meaning “supporters” or “helpers of Ali.” Others respected and accepted the legitimacy of his caliphate but opposed political succession based on bloodline to the Prophet. This group, who constituted the majority of Muslims, came to be known in time as “Sunni,” meaning “followers of [the Prophet’s] customs [sunna].”
The caliphate declined as a religious and political institution after the thirteenth century, although the term “caliph” continued to be used by some Muslim leaders until it was abolished in 1924 by Turkey’s first President Mustafa Kemal Ataturk. The decline and abolition of the caliphate became a powerful religious and political symbol to some Sunni Islamic activists during the nineteenth and twentieth centuries. These activists argued that leaders in the Islamic world had undermined the caliphate by abandoning the “true path” of Islam. Inspired by these figures, some contemporary Sunni extremists, such as Osama bin Laden and others, advocate the restoration of a new caliphate based on “pure” Islamic principles. The religious, ethnic, linguistic, and socio- economic diversity that exists within the global Muslim community present significant challenges to the reemergence of centralized, pan-sectarian, and widely recognized Islamic religious leadership.

In Iraq, Sunni-Shiite relations have been complicated by the dramatic shift in power dynamics that accompanied the removal of the Sunni-dominated Saddam Hussein regime, which ended centuries of Sunni political dominance. Lingering Shiite resentment and Sunni fears associated with this shift have helped transform local and individual political or economic disputes into broader sectarian confrontations in some cases. Both Sunni and Shiite insurgent groups and militias have conducted attacks on coalition and Iraqi government forces and civilians since 2003. Although major Shiite political factions largely abandoned violent tactics in favor of political participation during 2005 and 2006, intra-Shiite political rivalries have led to outbreaks of violence, particularly in southern Iraq. Similarly, From 2006 through 2008, Sunni Iraqis in Baghdad, Al Anbar province, and other areas fought against predominantly Sunni insurgent groups, foreign fighters, and Al Qaeda operatives, whom they held responsible for ongoing violence in their communities.