Sudanese government forces and allied militias attacked bases of a new rebel alliance in Darfur despite a ceasefire in the violent west, officials and rebels said on Saturday. An unpopular African Union-mediated peace deal was signed in May by only one of three rebel negotiating factions. Many leaders who did not sign formed a new group called the National Redemption Front (NRF), which began military operations earlier this month in the Kordofan area neighboring Darfur. Full Story