It has 57 member countries and is headquartered in Jeddah, Saudi Arabia.
"A Turkish Airlines flight, carrying the president and his entourage, left Hazrat Shahjalal (R) International Airport at about 10:35pm to join the special OIC summit in Istanbul", president's Press Secretary M Joynal Abedin told BSS.
The Organization of Islamic Cooperation (OIC) will convene tomorrow in Istanbul to discuss U.S. President Donald Trump's recent controversial decision to recognize Jerusalem as Israel's capital and the steps that will be taken by leaders from the Muslim world.
The OIC leaders will also explore ways to deal with the situation, the FO added.
The summit will be preceded by the Council of Foreign Ministers meeting, which will be attended by Foreign Minister Khawaja Asif, said a foreign ministry statement.More news: Keaton Jones Latest News, Photos, and Videos
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The president is accompanied by his Foreign Minister Saluddin Rabbani and other government officials on the visit.
"If we don't defend Jerusalem, one of the three most sacred places of Islam, what will we defend?" he stated, hinting that the text would cite East Jerusalem as the capital of the State of Palestine with pre-1967 borders.
The Arab League meeting indicates "Business as Usual" with United States as forum ended without announcing any tangible or intangible action from Arab World against U.S decision to recognize Jerusalem as the capital of Israel.
Al-Husainy made it clear that Tel Aviv and Trump must retract their decisions and the extraordinary OIC summit will not only be a beacon of hope for the Palestinians, but also to all Muslims and the world community.