Kosovo is a partially recognised state in Southeastern Europe, which declared independence from Serbia in February 2008 as the Republic of Kosovo. While Serbia recognises the Republic's governance of the territory, it still continues to claim it as its own Autonomous Province of Kosovo and Metohija. Wikipedia

Vatican City, officially Vatican City State, is one of the last six remaining absolute monarchies whose territory consists of a walled enclave within the city of Rome. It has an area of approximately 44 hectares, and a population of around 840. Wikipedia