The Nagorno Karabakh conflict holds Azerbaijan and Armenia in a state of neither peace, nor war, says a statement by US Under-Secretary of State for Political Affairs, head of the US delegation at the OSCE FMs' meeting Nicholas Burns. "The unsolved Nagorno Karabakh conflict prevents return of hundreds of thousands of refugees and forced migrants. That conflict keeps the borders of Armenia and Azerbaijan closed and increases alienation between neighboring nations," the US representative believes. "We thank Russia, France and OSCE MG co-chairs. We have developed a rational approach along with Azeri and Armenian leaders. It promises to lead to solution of the conflict via talks. Our organization should now urge the leaders of the countries to come to an accord," Burns said, reports Trend.