It’s been six straight days of drone attacks on Port Sudan, a place that used to be a quiet refuge for government forces and civilians amid Sudan’s civil war. Despite an arms embargo, the paramilitary Rapid Support Forces continues to receive increasingly sophisticated weapons that it has used against both the Sudanese national army and civilians. Brian Castner, head of research for Amnesty International, discusses his organization’s most recent investigation into the RSF arsenal with Host Carolyn Beeler and what it reveals about its backers and arms embargo violations.