revision preference src: The Brussels Agreement (/ Briselski sporazum, ), formally the First Agreement of Principles Governing the Normalisation of Relations, was a multilateral treaty proposed to normalize relations between the nations of Serbia and Kosovo. The agreement was negotiated and concluded in Brussels under the auspices of the European Union and signed on 19 April 2013. <SEP> tgt: The Brussels Agreement (/ Briselski sporazum, ), formally the First Agreement of Principles Governing the Normalisation of Relations, was a multilateral treaty proposed to normalize relations between the nations of Serbia and KosovoAs to the agreement not having been signed, see text of agreement.. The agreement was negotiated and concluded in Brussels under the auspices of the European Union and signed on 19 April 2013.