Dr. Maarten Bolhuis is a criminologist specializing in qualitative empirical research on the investigation and prosecution of crimes committed in the context of armed conflict and terrorism, with a particular focus on the involvement of migrants. His research and teaching explore the intersections of criminal law, refugee and citizenship law, and human rights law. Currently, he focuses on examining state practices of citizenship revocation in response to terrorism and other serious crimes, as well as international investigation and collaboration towards the prosecution of core international crimes and human smuggling by states hosting victims or suspects of such crimes.