This paper aims to analyze the relationship between domestic violence and terrorism through a comparison of terrorist attacks in the United Kingdom and the United States from 2011 to 2016. Academic frameworks for this paper include the new crime- terror nexus, research on toxic masculinity fand terrorism, and research on the relationship between mass shootings and domestic violence. Research from the two case studies shows a correlational relationship between terrorist and domestic violence, with high proportions of perpetrators having violent criminal histories, specifically histories of domestic violence. This paper holds that, based on the results of the research, addressing violence against women is a valid counterterrorism tool. This paper argues that it is important for academics and law enforcement to look at a violent criminal history, specifically of domestic violence, as a potential factor for radicalization.