In 2006, Montenegro invoked its right under the Constitutional Charter of [[Serbia]] and Montenegro to hold a referendum on independence from the state union. The vote for severing ties with Serbia exceeded 55% - the threshold set by the [[European Union]] - allowing Montenegro to formally declare its independence in [[June]] of 2006. | In 2006, Montenegro invoked its right under the Constitutional Charter of [[Serbia]] and Montenegro to hold a referendum on independence from the state union. The vote for severing ties with Serbia exceeded 55% - the threshold set by the [[European Union]] - allowing Montenegro to formally declare its independence in [[June]] of 2006. |