A humanitarian tragedy is unfolding in the South Sudan border town of Renk, with more than 10,000 South Sudanese fleeing the conflict in Sudan trapped in deplorable conditions in a squalid “transit centre” because of the collective failures of their government, relief agencies, and aid donors. These actors need to work together to urgently put an end to this deepening crisis. It is essential that funding be quickly mobilised to facilitate the onward movement of stranded returnees to their home states,…