Bosnia, split into two autonomous regions at the end of a three-year war in 1995, can only move towards closer ties with the European Union as a united country, Germany's foreign minister said on Friday, according to Reuters. "The road to the European Union goes only through the central government and unity," Guido Westerwelle told a news conference in Sarajevo on the last day of a Balkans tour that ends in Kosovo. "I want to stress clearly that the sovereignty and territorial integrity of Bosnia-Herzegovina must not be questioned," Westerwelle told reporters on Friday. "Bosnia-Herzegovina has only one European Union perspective, not many." He said the Balkan country should pursue political and economic reforms and must revise its constitution after Oct. 3 elections to make it more functional and to help it move forward with a view to closer EU ties. "Constitutional reform should allow for limiting ethnic groups in their potential to prevent state-level decision making. Federalism has to be more functional," said Westerwelle.