The Charter of the Organisation of Islamic Cooperation, commonly known as OIC Charter, is the foundational treaty of the Organisation of Islamic Cooperation. Its foundational principles are based on 18 chapters that objectively maintains the purpose, focus, functions, and foundation of the OIC, an intergovernmental organization founded in 1969. The charter was formally signed on 25 September 1969 by the 57 member states, including 5 observer states. However, it was revised by the 11th summit held in Dakar, Senegal on 14 March 2008.