 To do so, they'll take the case to the Supreme Court. Mr. Khan has had recent successes in court. On Friday, it was the Supreme Court that granted his party more seats in Parliament. On Saturday, his conviction for a case that had labeled his marriage to Bushra Bibi illegal was overturned. BBC correspondent Caroline Davies. Estonian Prime Minister Kaja Kalas has stepped down as the leader of the Baltic country to become the foreign policy chief of the European Union.