United Nations ? The U.N. Security Council voted Tuesday to extend the European Union peacekeeping force in Bosnia for a year, welcoming “tangible signs” of the Balkan nation’s progress toward EU membership.

Eleven years after a peace agreement ended a bitterly divisive 3 1/2-year war, the council reminded the country’s Muslims, Serbs and Croats that they are responsible for implementing the 1995 agreement signed in Dayton, Ohio, that ended the conflict.

The resolution adopted by the council said full implementation of the peace agreement is not yet complete and emphasized the importance of the return of refugees to their homes.

Bosnia was ravaged by Europe’s worst fighting since World War II, with 260,000 people killed and 1.8 million displaced. More than 60,000 NATO-led troops from 40 countries were deployed to Bosnia in late 1995 to enforce the Dayton agreement.

Security has improved over the years, allowing the NATO-led force to transfer peacekeeping duties last December to a new EU force, known as EUFOR.