Randall Hansen is Canada Research Chair in Global Migration at the University of Toronto. He works on immigration and citizenship, demography and population policy and the effects of war on civilians. He is the author or Fire and Fury: The Allied Bombing of Germany and Japan (2020, first edition on Germany 2009), Disobeying Hitler: German Resistance after Operation Valkyrie (Oxford, 2014), Sterilized by the State: Eugenics, Race and the Population Scare in 20th Century North America (with Desmond King, 2014), and Citizenship and Immigration in Post-War Britain (Oxford, 2000).