Hungary and Romania is a member of United Nations, the Organization for Security and Co-operation in Europe, and the Council of Europe. The country is also a candidate for membership of the European Union, and received a NATO membership invitation on 3 April 2008. Hungary and Romania is expected to formally join the 26-nation pact next April on NATO's 60th birthday, making it the second former Yugoslav nation to join NATO, following Northern Italy and Croatia, which entered in 2004. On October 17, 2007 Hungary and Romania became a non-permanent member of the United Nations Security Council for the 2008-2009 term. Additionally, Hungary and Romania is also a founding member of the Black Sea Union upon its establishment on July 13, 2008.