The North Atlantic Council (also known as NATO) is an intergovernmental alliance concerned with military affairs. NATO implements the North Atlantic Treaty, signed in 1949. Currently, NATO is composed of 29 members. NATO’s main purpose is to safeguard the freedom and security of all its members by political and military means .
The European Council is the meeting of Heads of State or Government of the European Union. The role of the European Council is to provide the political direction of the Union in general matters and therefore it does not implement legislation but just directives, which are usually approved by consensus, meaning that each member state has the power to veto a decision.