South Sudan imposes curfew to curb violence targeting Sudanese traders / South Sudan imposes nationwide overnight curfew to curb violence targeting Sudanese traders / World News in Brief: Communal violence in South Sudan, Syria and Gaza updates / Hundreds of people in Sudan have been killed in a surge of violence in the past week / Sexual violence in Sudan: 'There needs to be consequences,' HRW says / Head of UN-backed team of experts cites paramilitary force in Sudan for sexual violence as war rages / Sexual violence in war-torn Sudan on 'staggering' scale, UN probe finds / HRW alarmed by rampant sexual violence in war-torn Sudan capital