The North Atlantic Council (NAC) is the principal decision-making body of NATO. It is composed of representatives from all member countries, typically at the ambassadorial or ministerial level. The NAC meets regularly at NATO Headquarters in Brussels to discuss and make decisions on key political and military matters, ensuring the collective defense and security of NATO member states. It sets overall policies and priorities for the Alliance and is chaired by NATO's Secretary General. The NAC plays a crucial role in coordinating defense strategies, addressing security challenges, and fostering cooperation among members.