This qualitative case study tests three theories against the empirical evidence: evolution theory, feminist theory, and Strategic Rape Concept. Each theory will be tested in order to determine its explanatory strength, and to shed light on how ISIS's use of sexual violence can be explained. Due to the multilayered nature of the case study as it is current and highly complex, the research suggests that the elements pertaining to all three theories can collectively explain the role of sexual violence in ISIS's war for domination and control, and improve our understanding of how sexual violence is realized and perpetrated in the modern world.