On 21 May 2006, Montenegro held a referendum to determine whether to end its union with Serbia. The results showed 55.4% of voters in favour of independence, which was just above the 55% required by the referendum. This was followed on 5 June 2006 by Serbia's declaration of independence, marking the final dissolution of the State Union of Serbia and Montenegro, and the re-emergence of Serbia as an independent state, for the first time since 1918. On the same occasion, the National Assembly of Serbia declared Serbia to be the legal successor to the former state union. 