On 6 September 2007, Tadić was a signatory of the agreement that led to the formation of the Council for Cooperation between Serbia and Republika Srpska, together with Milorad Dodik and Vojislav Koštunica. In late 2007, he stated that Serbia does not support a break-up of Bosnia and Herzegovina and that, as a guarantor of the Dayton Accords that brought peace to Bosnia, he supports its territorial integrity. Tadić also said that Serbia supports the accession of Bosnia and Herzegovina to the EU, and NATO.