Sudan doctors network accuses RSF of 'war crimes' in Omdurman / Sudan Doctors Network accuses RSF of 'war crimes' after 31 killed / World News in Brief: Syria families executed, Duterte arrested on ICC warrant, Sudan's healthcare collapse / U.S. aid cuts will "deepen the suffering" in Sudan, front-line doctor says / Heavy fighting in Sudan forces Doctors Without Borders to stop aid at a camp with 500,000 people / Doctors Without Borders halts activities at Sudan's Zamzam camp due to heavy fighting / About 70 people killed in attack on hospital in Sudan's Darfur region, WHO chief says / Attack on hospital in Sudan's Darfur region kills 70, says WHO chief / Some 70 people killed in attack on hospital in Sudan's Darfur region, WHO chief says