Spain is one of five member states of the European Union that does not recognize unilateral declaration of independence of Kosovo and is actively opposing its membership in international organisations such as UNESCO and Interpol. In addition, Spain is supporting Serbia's insistence on establishment of Community of Serb Municipalities in Kosovo as provided by the 2013 Brussels Agreement signed under the auspices of the European Union. Some explained hard Spanish position towards Kosovo by drawing parallels with its own internal issues with the Catalan independence movement and with the United Kingdom dispute over Gibraltar. Serbia strongly supported Spanish territorial integrity during the 2017 Catalan independence referendum crisis with Serbian Foreign Minister stating that Spain is one of the best international friends of Serbia.