Sexual violence is a grave concern in many of the world’s worst crisis situations. For example, such violence has been attributed as a strong driver for why people are fleeing Syria, with their accounts describing grotesque use of rape and sexual slavery. Boko Haram in Nigeria has engaged in massive sexual slavery. All of the major armed conflict actors involved in the wars in eastern Democratic Republic of the Congo (DRC) have been implicated in sexual violence, of various kinds. Extremist Islamist groups and militias are often highlighted as the worst contemporary offenders. Yet sexual violence is committed by numerous armed actors with different characteristics and agendas, including state militaries, some of which are among the most serious offenders.