Haren, Belgium in the context of "City of Brussels"

The NATO headquarters is the political and administrative center of the North Atlantic Treaty Organization (NATO). After previous locations in London and Paris, it has been headquartered in Brussels since 1967, in a complex in Haren, part of the City of Brussels, along the Boulevard Léopold III/Leopold III-laan.

The staff at the headquarters is composed of national delegations of NATO member states and includes civilian and military liaison offices and officers or diplomatic missions and diplomats of partner countries, as well as the International Staff (IS) and International Military Staff (IMS) filled from serving members of the armed forces of member states. Non-governmental citizens' groups have also grown up in support of NATO, broadly under the banner of the Atlantic Council/Atlantic Treaty Association movement.

The 19 municipalities of the Brussels-Capital Region are the political subdivisions of Belgium's central region. The government of each municipality is responsible for the handling of local level duties, such as law enforcement and the upkeep of schools and roads within its borders. Municipal administration is also conducted by a mayor, a council, and an executive.

In 1831, Belgium was divided into 2,739 municipalities, including 20 within the current Brussels-Capital Region (which at that time did not exist). In 1841, a 21st and 22nd municipality were created when Berchem-Sainte-Agathe formally separated from neighbouring Koekelberg and Jette-Ganshoren split into Jette and Ganshoren. Since then, three municipalities have been merged with the City of Brussels: Laeken, Haren, and Neder-Over-Heembeek, in 1921. Unlike most of the municipalities in Belgium, the ones located in the Brussels-Capital Region were not merged with others during mergers occurring in 1964, 1970, and 1975. However, many territorial changes have occurred, predominantly between the City of Brussels and its neighbouring municipalities.