Saudi Arabia's postwar concerns about Iraq led to a rapprochement with Iran during 1991. Historically, relations with non-Arab Iran had been correct, although the Saudis tended to distrust Iranian intentions and to resent the perceived arrogance of the shah. Nevertheless, the two countries had cooperated on regional security issues despite their differences over specific policies such as oil production quotas. The Iranian Islamic Revolution of 1979 disrupted this shared interest in regional political stability. From a Saudi perspective, the rhetoric of some Iranian revolutionary leaders, who called for the overthrow of all monarchies as being un-Islamic, presented a serious subversive threat to the regimes in the area. Political disturbances in the kingdom during 1979 and 1980, including the violent occupation of the Grand Mosque in Mecca by Sunni religious extremists and riots among Saudi Shia in the Eastern Province, reinforced the perception that Iran was exploiting, even inciting, discontent as part of a concerted policy to export its revolution. The Saudi government consequently was not displeased when Iraq invaded Iran in September 1980. Nevertheless, Saudi Arabia remained officially neutral throughout the Iran-Iraq War, even though in practice its policies made it an effective Iraqi ally.

The thorniest issue in Saudi-Iranian relations during the 1980s was not Riyadh's discreet support of Baghdad but the annual hajj, or pilgrimage to Mecca, that took place in the twelfth month of the Muslim lunar calendar (see Tenets of Sunni Islam Pilgrimage , ch. 2). Contention over the participation in hajj rituals of Iranian pilgrims, who numbered about 150,000 in this period and comprised the largest single national group among the approximately 2 million Muslims who attended the yearly hajj rites, symbolized the increasing animosity between Saudi Arabia and Iran. Tehran insisted that its pilgrims had a religious right and obligation to engage in political demonstrations during the hajj. Riyadh, however, believed that the behavior of the Iranian pilgrims violated the spiritual significance of the hajj and sought to confine demonstrators to isolated areas where their chanting would cause the least interference with other pilgrims. Because the Saudis esteemed their role as protectors of the Muslim holy sites in the Hijaz, the Iranian conduct presented a major dilemma: to permit unhindered demonstrations would detract from the essential religious nature of the hajj to prevent the demonstrations by force would sully the government's international reputation as guardian of Islam's most sacred shrines. Tensions increased yearly without a satisfactory resolution until the summer of 1987, when efforts by Saudi security forces to suppress an unauthorized demonstration in front of Mecca's Grand Mosque led to the deaths of more than 400 pilgrims, at least two-thirds of whom were Iranians. This tragedy stunned the Saudis and galvanized their resolve to ban all activitib49 ties not directly associated with the hajj rituals. In Tehran, angry mobs retaliated by ransacking the Saudi embassy they detained and beat several diplomats, including one Saudi official who subsequently died from his injuries. These incidents severed the frayed threads that still connected Saudi Arabia and Iran in early 1988, Riyadh cut its diplomatic relations with Tehran, in effect closing the primary channel by which Iranian pilgrims obtained Saudi visas required for the hajj.

Although Iran began to indicate its interest in normalizing relations with Saudi Arabia as early as 1989, officials in the kingdom remained suspicious of Tehran's motives and did not reciprocate its overtures for almost two years. The Persian Gulf War, however, significantly altered Saudi perceptions of Iran. The unexpected emergence of Iraq as a mortal enemy refocused Saudi security concerns and paved the way for a less hostile attitude toward Iran. For example, Riyadh welcomed Tehran's consistent demands for an Iraqi withdrawal from Kuwait and interpreted Iran's strict adherence to neutrality during the conflict as a positive development. Despite their lingering doubts about Tehran's aims vis-à-vis the Shia population of southern Iraq, the Saudis recognized after the war that they and the Iranians shared an interest in containing Iraq and agreed to discuss the prospects of restoring diplomatic relations. The issue that had proved so vexatious throughout the 1980s, the hajj, was resolved through a compromise that enabled Iranians to participate in the 1991 pilgrimage, the first appearance in four years of a hajj contingent sponsored by Tehran. In effect, once Saudi Arabia and Iran decided that cooperation served their regional interests, the hajj lost its symbolic significance as a focus of contention between two countries that defined themselves as Islamic. The reopening of embassies in Riyadh and Tehran accompanied the resolution of the hajj and other outstanding issues.

Data as of December 1992