The real answer is that war and genocide isn't a condition in which a randomised controlled trial can work.
Your client may be interested in Dabanga https://www.dabangasudan.org/en/about-us for Sudanese media reporting, which relies on external funding as it operates from exile and is probably saving a lot of lives via shortwave radio broadcasting so displaced civilians can avoid travel routes where they get murdered.
We deliver cash transfers in Eastern DRC: https://GiveDirectly.org/drc
We also deliver cash transfers to Sudanese refugees fleeing to Uganda: https://muslimimpactlab.org/give-zakat-directly-to-sudanese-refugees/
Reach out to [email protected] if you want to learn more