The National Security Council (Turkish: Milli Güvenlik Kurulu, MGK) is the principal government agency used by the President of Turkey (who is the commander-in-chief) for consideration of national security, military, and foreign policy matters with senior national security officials, and for coordinating these policies among various government agencies. Like the national security councils of other countries, the MGK develops the national security policy.
The policy is expressed in the National Security Policy Document (Turkish: Milli Güvenlik Siyaseti Belgesi), commonly known as "The Red Book".The Red Book is sometimes called the "most secret" document in Turkey. It is updated once or twice a decade.