Biljana Plavsic, a Bosnian Serb biologist and ultra-nationalist political leader during the Balkan wars of the 1990s, has died in Serbia’s capital, Belgrade, aged 96. She pleaded guilty to one count of crimes against humanity and expressed remorse, but later recanted, saying she “would do the same again”.Her death was announced on Thursday by Serbian state media. No other details were provided.Plavsic, a former professor at Sarajevo University who studied in Zagreb, Croatia, New York, London and Prague, and wrote more than 100 scientific papers, became notorious in the 1990s for applying biology to politics when the multi-ethnic state of...