Shelling and gunfire resumed Sunday in the Sudanese capital, witnesses said, after the end of a 24-hour ceasefire that had given civilians rare respite from nearly two months of war. Deadly fighting has raged in the northeast African country since mid-April, when army chief Abdel Fattah al-Burhan and his former deputy Mohamed Hamdan Daglo, who commands the paramilitary Rapid Support Forces (RSF), turned on each other.