Held amid tight security measures in Dhahran in the Eastern Province, Custodian of the Two Holy Mosques King Salman bin Abdulaziz will open the summit, whose agenda will cover several issues of Arab concern.
"The Palestinian case is our priority and will remain so until all the Palestinians gain their rights", he said, stressing that East Jerusalem is the capital of Palestine.
On Dec. 6, 2017, Trump announced his official recognition of Jerusalem as Israel's capital and instructed the relocation of the USA embassy from Tel Aviv to the disputed holy city, which promptly triggered fury and condemnation throughout the Arab world. The summit will be concluded by a major military parade, which will be attended by the leaders, headed by King Salman and Crown Prince Mohammed bin Salman, Deputy Prime Minister and Minister of Defense.
Saudi Arabia, a long-time ally of the US, had also declared their support for Saturday's strikes on Syria by the US, UK and France, although the king did not mention this during his speech.More news: Newcastle comes back to top Arsenal
Salman announced that Riyadh would be making a $150 million donation to East Jerusalem.
The main focus of King Salman's opening speech was Iran, which he criticised for "terrorist acts" and "blatant interference" in regional affairs, particularly the conflict in Yemen. The two regional titans, locked in proxy wars in Syria and in Saudi Arabia's southern neighbor Yemen, back opposing parties in Iraq and Lebanon.
Western states have accused forces of Syrian President Bashar Assad of an attack with the use of chemicals in the Syrian town of Douma earlier in the month.
The stand-off between Qatar and Saudi Arabia, UAE, Bahrain and Egypt is also not expected to feature.