A No-Fly Zone is an area where aircraft are not allowed to fly, usually established for safety or security reasons. These zones can be created by governments or international organizations to protect civilians, prevent military actions, or safeguard sensitive locations. No-fly zones are often enforced by military forces, which monitor the airspace and may intercept or engage unauthorized aircraft. They have been used in various conflicts, such as during the Gulf War and in Bosnia, to limit the movement of hostile forces and protect vulnerable populations.