(see Municipalities and cities of Kosovo section). Advocates of reform of Serbian local self-government system point out that Serbian municipalities (with 50,000 citizens in average) are the largest in Europe, both by territory and number of residents, and as such can be inefficient in handling citizens' needs and distributing the income from the country budget into most relevant projects. Cities and city municipalities Cities are another type of local self-government. The territory with the city status usually has more than 100,000 inhabitants, but is otherwise very similar to municipality. There are 27 cities (, singular: ), each having an assembly and budget of its own. Only the cities have mayors (Serbian Latin: , singular: ), although the presidents of the municipalities are often referred to as "mayors" in everyday usage. As with a municipality, the territory of a city is composed of a city proper and surrounding villages (e.g. the territory of the City of Subotica is composed of the Subotica town and surrounding villages). Every city (and municipality) is part of a district. The exception is the capital Belgrade, which is not part of any district. The city may or may not be divided into city municipalities. Six cities: Belgrade, Novi Sad, Niš, Požarevac, Užice and Vranje comprise several city municipalities. Competences of cities and these municipalities are divided. The municipalities of these cities also have their assemblies and other prerogatives. Two largest city municipalities by number of residents are the Novi Sad (307,760) and New Belgrade (212,104). Of these six cities, only Novi Sad did not undergo the full transformation, as the newly formed municipality of Petrovaradin exists pretty much only formally; thus, the City municipality of Novi Sad is largely equated to city of Novi Sad. The city of Kragujevac had its own city municipalities from 2002 until 2008. In 2013, the city municipality of Sevojno within the city of Užice was established. Municipalities and cities of Kosovo Serbian law still treats Kosovo as an integral part of Serbia (officially the Autonomous Province of Kosovo and Metohija), although Kosovo declared independence in 2008. The Law on Territorial Organization defines 28 municipalities and 1 city on the territory of Kosovo. Kosovo was under official United Nations' administration (UNMIK) from 1999 to 2008. The UNMIK administration changed the territorial organisation on the territory of Kosovo. In 2000 the municipality of Gora was merged with Opolje (part of the Municipality