ODZAK, Bosnia-Herzegovina (AP) — Truck drivers from Balkan countries outside the European Union blocked border crossings in the region Monday to protest the recent enforcement of EU entry regulations that they say seriously undermine their work. Long columns of trucks formed at freight border crossings in Bosnia, Serbia, North Macedonia and Montenegro in a coordinated action in the four countries. The blockade also included the Adriatic Sea port of Bar in southern Montenegro. A new, electronic