Africa News Tonight: Some residents of the Sudanese capital, Khartoum, say they have not heard any gunshots since a 72-hour cease-fire began Sunday morning. Ugandan security forces have stepped up patrols along the frontier with the volatile eastern Democratic Republic of Congo. And, Ahead of tomorrow’s World Refugee Day, humanitarian agencies are distributing aid to the nearly 500,000 refugees who live in Cameroon. For this and more, stay tuned to Africa News Tonight!