RIYADH:  The fourth Saudi plane carrying aid for Sudanese people left King Khalid International Airport in Riyadh on Thursday carrying 10 tons of relief. The relief includes food baskets, shelter materials, and medical supplies. The aid flights are part of a Saudi directive to provide the Sudanese people with assistance worth $100 million. The UN on Thursday urged countries with influence in Africa to help end the conflict in Sudan after reported progress in truce talks between the army and the rival paramilitary Rapid Support Forces. Clashes rocked Halfaya, an entry point to the capital, early on Thursday as residents heard warplanes circling over Khartoum and its adjoining sister cities of Bahri and Omdurman, but the fighting appeared calmer than on Wednesday.