A critical task of the past 25 years of research on violence against women and girls (VAWG) has been to develop an understanding of the drivers of men’s perpetration of intimate partner violence (IPV) – physical and/or sexual violence against their female partners – and the risk factors that shape women’s experience of IPV. In this brief, we reflect on the evidence produced through What Works, as well as the wider body of literature that has emerged in the past six to ten years. We also provide a comprehensive review of new knowledge of the drivers of, and risk factors for, men’s violence against their wives or girlfriends.