The chapter is concerned with metaphor and focusses specifically on war metaphors in political discourses. The cognitive mechanisms at work in metaphor are described with an emphasis on frames as the unit of conceptual organisation that gets mapped in political metaphors. Recent experimental studies demonstrating the framing effects of metaphor are discussed. The war frame is described to include discussion of intertextuality as a means of accessing it. Three case studies are then presented exploring war metaphors in discourses of Covid-19, Brexit and immigration. Analogies with the first and second world wars in particular are highlighted and critiqued. The chapter defines and discusses extreme metaphors illustrated through examples in which immigrants are compared to animals and closes with a discussion of how readers may resist extreme metaphors.