Milan Babic, the leader of rebel Serbs in Croatia and one of the key figures in the early Balkan wars of the 1990s, committed suicide in the Netherlands prison where he was serving a 13-year sentence, the UN war crimes tribunal announced. Babic, a former leader of Serbs in Croatia, was sentenced to 13 years after pleading guilty to crimes against non-Serb civilians in the self-proclaimed political entity in eastern Croatia, the Republic of Serbian Krajina. Babic previously testified in the trial of former Yugoslav President Slobodan Milosevic, 64, the most senior figure on trial at the court in The Hague.