SARAJEVO, Bosnia-Herzegovina (AP) — Bosnia's prime minister Denis Zvizdic says he has no doubt his country will one day join the European Union in spite of what he considers to be obstructions from within.

In an apparent reference to a sustained effort by the Russia-backed Bosnian Serb leaders to obstruct the EU-required reforms, Zvizdic said Wednesday he was certain Bosnia will overcome negative "internal and external" forces and achieve membership of the bloc, which currently numbers 28.

Zvizdic spoke a day after the EU presented its strategy for the Western Balkans, reassuring countries of the region that the path to membership remains open if they resolve disputes, particularly with their neighbors.

The EU's executive Commission placed Bosnia last in the line of aspiring members, behind Serbia and Montenegro.