National Security Council, The White House | 14,081 followers on LinkedIn. The National Security Council (NSC) is the President's principal forum for considering national security and foreign policy matters with his senior national security advisors and cabinet officials. Since its inception under President Truman, the Council's function has been to advise and assist the President on national security and foreign policies. The Council also serves as the President's principal arm for coordinating these policies among various government agencies.