RIYADH, Saudi Arabia — World leaders and top dignitaries began arriving in Saudi Arabia on Saturday to give their condolences following the death of King Abdullah, who died early Friday at age 90.

Despite deep tensions and rivalries between the nations, Iran’s Foreign Minister Mohammad Javad Zarif was among the first to arrive to the Sunni-ruled kingdom, where he was greeted at the airport by the late king’s son, Prince Turki, who is governor of Riyadh.

The newly enthroned King Salman is also expected to receive in the coming days President Obama, Egyptian President Abdel-Fattah el-Sissi, Japan’s Crown Prince Naruhito, Spain’s King Felipe VI, Jordan’s King Abdullah, Denmark’s Crown Prince Frederik, Dutch King Willem-Alexander, and the United Kingdom’s Prince Charles. Morocco’s Prince Moulay Rachid will pay his respects on behalf of his brother King Mohammed VI.

Talk of Zarif visiting Saudi Arabia last year quickly dissipated after Iran protested comments made by Saudi Arabia’s Foreign Minister Saud al-Faisal in which he called on Tehran to withdraw its “occupying forces” from Syria, Yemen and Iraq.

Iran insists it has no combat forces on the ground in any of the three countries, although it says it has sent senior commanders as advisers to Syria and Iraq.

The diplomatic squabble exemplified how Abdullah’s most pressing priority was to confront the Shiite powerhouse across the Gulf. The multiple conflicts across the region deepened Sunni-Shiite hatreds and fueled militancy during his reign.

The king was buried Friday in an unmarked grave after a prayer service in Riyadh. The Muslim-only funeral was attended by Turkish President Tayyip Erdogan and the rulers of Qatar, Kuwait and Bahrain.