Visit to Sarajevo comes after Bosnian Serb leaders bar federal judicial authorities and police from Republika Srpska.

NATO will not let a security vacuum develop in Bosnia and Herzegovina at this time of crisis but political leaders should work together to resolve problems, NATO Secretary-General Mark Rutte said on Monday.

NATO's secretary general on Monday pledged the military alliance's “unwavering” support for Bosnia's territorial integrity after a series of Bosnian Serb separatist moves raised tensions nearly 30 years after the end of a bloody war.

NATO fully supports Bosnia's territorial integrity and political leaders should resolve tensions that have been fuelled by a jail sentence imposed on the president of the Bosnian Serb region, the alliance's Secretary-General Mark Rutte said on Monday.

It will be up to the political leaders of Bosnia and Herzegovina to take their responsibility here,' says Mark Rutte - Anadolu Ajansı

NATO Secretary-General Mark Rutte was set to arrive in Bosnia-Herzegovina on Monday as the country grapples with escalating political tensions between