Vojislav Seselj, leader of Serbia’s extreme nationalist Radical party, received a 15-month prison sentence for exposing protected witnesses during his trial in The Hague for war crimes.

Mr Seselj “intentionally” revealed names and other details about three witnesses in one of his books, published after the United Nations tribunal’s protection order. He admitted he was the author, yet in March pleaded not guilty to the resulting contempt of court charge.