Organisation of Islamic : Cooperation (OIC; Arabic: منظمة التعاون الإسلامي‎, romanized: Munaẓẓama at-Taʿāwun al-ʾIslāmiyy; French: Organisation de la coopération islamique), formerly the Organisation of the Islamic Conference, is an international organization founded in 1969, consisting of 57 member states, with a collective population of over 1.8 billion as of 2015 with 49 countries being Muslim-majority countries.[1] The organisation states that it is "the collective voice of the Muslim world" and works to "safeguard and protect the interests of the Muslim world in the spirit of promoting international peace and harmony".

The Association of Southeast Asian Nations : (ASEAN) is a regional grouping that promotes economic, political, and security cooperation among its ten members: Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam.

correct me if I'm WRONG