Since the Russian annexation of Crimea in 2014 and the beginning of the war in Donbas, Eastern Europe has been facing a migration crisis. Millions of Ukrainians are internally displaced or have fled the country and now face an uncertain future. At the same time, Western-imposed sanctions and the creation of the Eurasian Economic Union have affected Russia's migration policies. These largely ignored processes have a potential to change the social landscape of the region for many years to come. The aim of this collection is to shed light on the forgotten migrant crisis at the European Union's doorstep and make sense of the various migration processes in and out of Ukraine and Russia. The book is divided into two sections. The first section deals with migration processes that have taken place within Ukraine or have involved Ukrainian citizens' migration out of the country, excluding Russia. The second section discusses Russia's response to the rapid inflow of migrants from Ukraine, its changing migration policies and their effect on migrants, as well as other processes related to the phenomenon over the course of the Ukraine crisis. Contributors Tania Bulakh, Mikhail Denisenko, Joanna Fomina, Michael Gentile, Kateryna Ivashchenko-Stadnik, Marina A. Kingsbury, Irina Kuznetsova, Viacheslav Morozov, Vladimir Mukomel, Olga Oleinikova and Caress Schenk.