Turkish President Recep Tayyip Erdogan as the current chairman of the Organization of Islamic Cooperation has announced that the leaders of the OIC members would adopt a road map on the United States decision to recognize Jerusalem as the capital of Israel and move its embassy there from Tel Aviv.
Marches were staged in Pakistan, AJK, Iran, Indonesia, Malaysia, Afghanistan, India-held Kashmir, Jordan, Tunisia, Somalia, Yemen, and Indonesia.
In a speech at the White House on Wednesday, Trump said his administration would also begin a years-long process of moving the American embassy in Tel Aviv to the holy city.
The president is expected to reach Istanbul early Tuesday while he is set to return home next day, he added.
The OIC leaders will gather at the Lutfi Kirdar Congress Centre for the summit convened by Turkey President Recep Tayyip Erdogan, who is also the OIC chairman, hoping to reach a consensus on the issue which had been greatly criticised, especially by the Muslims.
Trump officially declared Quds Israel's capital, despite warnings from around the world that the measure risks triggering a fresh wave of violence in the Middle East.
Israel has occupied East Quds since the 1967 Middle East war.
In advance of the conference, Qatari Foreign Ministry Spokesman Ahmed bin Saeed al-Rumaihi hailed the occasion as a moment "to reaffirm the rejection of Washington's decision about Jerusalem, which is contrary to worldwide law...[and an opportunity] for Islamic states to defend their central cause".
"He (Trump) wanted to show he is helpful to the Zionists and the Israelis".
Erdogan has accused the United States of ignoring Palestinian claims to east Jerusalem and "trampling on global law".
Protests in Gaza and the West Bank have turned violent. For its part, the PA has encouraged its citizens to take to the streets and has confirmed it will boycott U.S. Vice President Mike Pence's upcoming visit to Israel and the region.