A refugee from the village of Kailek tends a camp fire in Kas, Sudan. (Sudarsan Raghavan/Knight Ridder) Muslim killing Muslim in Sudan By Sudarsan Raghavan Knight Ridder News Service KAILEK, Sudan -- The white-robed men on horseback shot two of Hamid Rahman's boys that scorching afternoon. They were 3 and 6. But they weren't the youngest or the weakest to die. The Arab marauders targeted the blind, the disabled, the women carrying children -- anyone who couldn't run fast enough. "They killed even babies," recalled Rahman, 40, a survivor with sad, glassy eyes. Here, in the...