In 1993, Romeo Dallaire was full of hope for Rwanda. He was about to lead United Nations peacekeepers in the central African nation. A year later he left a broken man, having watched more than 800,000 people perish despite his pleas for more troops to stop the genocide. "We could have actually saved hundreds of thousands," Dallaire told CNN's Christiane Amanpour for "Scream Bloody Murder." full story