Correction: South Sudan-Failure to Act story

FILE – In this Thursday, June 8, 2017 file photo, from left to right, South Sudanese refugees Thomas Wani, 12, brother Peter Lemi, 14, mother Rose Sunday, and father Julius Lezu, cross a wooden bridge from South Sudan to Uganda at the Busia crossing, near Kuluba, in northern Uganda. When the region of Yei in South Sudan fell into ethnic cleansing in 2016, a handful of UN and US officials begged their leaders for help but the pleas fell on deaf ears, an AP investigation has found. (AP Photo/Ben Curtis, File)