The Inter-State Council is established by Article 263 of the Constitution, which provides for the creation of such a council to address matters of common interest between the Union and the States. Zonal Councils, while also related to inter-state cooperation, were established by an Act of Parliament, the States Reorganisation Act, 1956, and are not a direct constitutional creation. The National Security Council is an extra-constitutional body established by executive resolution in 1998 to advise the government on matters of national security.