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 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.