In an age of ethnic nationalism and anti-immigrant rhetoric, the study of refugees can help develop a new outlook on social justice, just as the post-war international order ends. The global financial crisis, the rise of populist leaders like Trump, Putin, and Erdogan, not to mention the arrival of anti-EU parties, raises the need to interrogate the refugee, migrant, citizen, stateless, legal, and illegal as concepts. This insightful Research Handbook is a timely contribution to that debate.