The US presidential envoy to Darfur joined activists Tuesday in blaming the world for failing to protect Sudan from genocide. "All of us should be impatient. We have failed in our responsibility to the people of Sudan," Rich Williamson, US President George W. Bush's special envoy for Darfur since January, told a meeting with UN Security Council members. The United Nations so far has been unable to bring peace to Sudan or to prosecute its alleged war criminals. Williamson pointed to 2 million people dead and more than 6 million displaced in Sudan's north-south civil war. "And in Darfur, we've another conflagration, a genocide in slow motion. For over 300,000 people have perished, and over 2.5 million people have been driven from their homes," he said at a meeting organized by the US Mission to the UN "If we keep doing what we've been doing, we won't save those lives."