Four children were among 20 people killed in an army air strike in the capital Khartoum on Tuesday, Sudanese volunteer rescuers reported, adding to dozens killed in the Al-Jazira state since Sunday. The strike wounded 27 people, including women and children, and left bodies “charred”, according to the emergency response room (ERR) in Khartoum’s south belt, one of hundreds of youth-led volunteer groups. In Al-Jazira state just south of Khartoum, fierce clashes ignited on Sunday after a paramilitary commander defected to the army, killing more than 50 people, according to activists. An army air …