Bosnia's international high representative on Friday accused the country's Serb statelet's political leadership of seeking to destabilise the Balkan nation, and urged an end to actions that threaten to "undermine" its peace accords.

Bosnia's Serb Republic is expected to bar the state police and judiciary from operating on its territory on Thursday, a day after a state court ordered the Russian-backed separatist Serb president to step down for defying an international peace envoy.

BELGRADE (Reuters) - Bosnia's state court on Wednesday convicted Bosnian Serb separatist leader Milorad Dodik for defying orders of an international peace envoy and sentenced him to one year in prison, the court said in a statement.