BELGRADE, Serbia -- Serbia's war crimes court convicted a Croatian Serb on Tuesday for his role in the 1991 torture and killing of 200 Croatian prisoners at a pig farm during the Balkan conflicts. Damir Sireta was sentenced after a six-month trial to serve 20 years in prison for war crimes. He was the 14th former paramilitary convicted for the killings near the eastern Croatian town of Vukovar during Croatia's 1991-95 war for independence from the former Serb-led Yugoslavia - one of the worst massacres of POWs during the Balkan wars of the 1990s. Serb paramilitary units seized the victims...