Europe

Serbia, Bosnian Serbs hold joint anti-terrorism drill

  • Serbian special forces try to apprehend a supposed terrorist during a joint anti-terrorist drill between Serbia and Republic of Srpska, not far from the border crossing Trbusnica, near the city of Loznica some 120 km (75 miles) west of Belgrade, Serbia, Sunday, Aug. 28, 2016. Anti-terrorist police from Serbia and the Serb mini-state in Bosnia have held a joint drill that could add to simmering tensions in the Balkans stemming from the 1990s’ war. (AP Photo/Darko Vojinovic)

    Serbian special forces try to apprehend a supposed terrorist during a joint anti-terrorist drill between Serbia and Republic of Srpska, not far from the border crossing Trbusnica, near the city of Loznica some 120 km (75 miles) west of Belgrade, Serbia, Sunday, Aug. 28, 2016. Anti-terrorist police from Serbia and the Serb mini-state in Bosnia have held a joint drill that could add to simmering tensions in the Balkans stemming from the 1990s’ war. (AP Photo/Darko Vojinovic)  (The Associated Press)

  • Serbian and Republic of Srpska special forces take part in a joint anti-terrorist drill between Serbia and Republic of Srpska, not far from the border crossing Trbusnica, near the city of Loznica some 120 km (75 miles) west of Belgrade, Serbia, Sunday, Aug. 28, 2016. Anti-terrorist police from Serbia and the Serb mini-state in Bosnia have held a joint drill that could add to simmering tensions in the Balkans stemming from the 1990s’ war. (AP Photo/Darko Vojinovic)

    Serbian and Republic of Srpska special forces take part in a joint anti-terrorist drill between Serbia and Republic of Srpska, not far from the border crossing Trbusnica, near the city of Loznica some 120 km (75 miles) west of Belgrade, Serbia, Sunday, Aug. 28, 2016. Anti-terrorist police from Serbia and the Serb mini-state in Bosnia have held a joint drill that could add to simmering tensions in the Balkans stemming from the 1990s’ war. (AP Photo/Darko Vojinovic)  (The Associated Press)

  • A supposed terrorist shoots during a joint anti-terrorist drill between Serbia and Republic of Srpska, not far from the border crossing Trbusnica, near the city of Loznica some 120 km (75 miles) west of Belgrade, Serbia, Sunday, Aug. 28, 2016. Anti-terrorist police from Serbia and the Serb mini-state in Bosnia have held a joint drill that could add to simmering tensions in the Balkans stemming from the 1990s’ war. (AP Photo/Darko Vojinovic)

    A supposed terrorist shoots during a joint anti-terrorist drill between Serbia and Republic of Srpska, not far from the border crossing Trbusnica, near the city of Loznica some 120 km (75 miles) west of Belgrade, Serbia, Sunday, Aug. 28, 2016. Anti-terrorist police from Serbia and the Serb mini-state in Bosnia have held a joint drill that could add to simmering tensions in the Balkans stemming from the 1990s’ war. (AP Photo/Darko Vojinovic)  (The Associated Press)

Police from Serbia and the Serb mini-state in Bosnia have held a joint anti-terrorism drill that could add to simmering tensions in the Balkans stemming from the 1990s war.

The exercise, dubbed "Drina 2016," was held Sunday at the border between Serbia and Bosnia simulating an extremist attack and a bus hijacking. Several thousand people watched the drill.

Serbian President Tomislav Nikolic says that the exercise has shown that borders shouldn't exist when it comes to fighting terrorism.

Joint security drills by Serbian and Bosnian Serb troops remain a sensitive issue because Serbia backed Bosnian Serbs in their fight against Bosnia's Muslims and Croats during the 1992-95 war.

About 100,000 people died in the war, and millions were made homeless amid numerous atrocities.