The articles collected in this special issue of the SEER Journal deal with all the major channels of migration corresponding to different waves, from refugees and asylum seekers fleeing war, including civil war, and ethnic conflicts on the peripheries of the former Soviet Union, to the longer-term wave of people moving from the middle east and Asia to western Europe, passing through central and eastern European countries in transit. Main issues covered by these articles include the case of guest workers from Turkey and Yugoslavia, the refugee wave of the Balkans War, the massive outflow of the population from Albania and Moldova, the case of migration from Asia and the Middle East via transit countries in eastern Europe and East-West intra-EU labour mobility after the eastern enlargement of the EU. With contributions by: Prof. William Bagatelas; Martin Baldwin-Edwards, Dr. Jens Becker, Ass. Prof. Dr. Biljana Eavkoska, Ph D; Prof. Dr. Birsen Ersel; Evangelos Evangelou; Dr. Deniz Genc; Stella Georgieva; Agnes Hars, Ph D; Susanne Huth; Violeta Ivanova; Prof. Dr. Marion Moehle; Giacomo Morabito, Ph D; Angela Munteanu; Prof. Dr. Rossitsa Rangelova; Dr. Lela Rekhviashvili, Ph D; Dr. Anna Rocheva; Viorel Rotila, Ph D; Stefano Ruvolo; Prof. Bruno Sergi; Arben Tabaku, MSc; Prof. Dr. Ilia Telo; Prof. Katia Vladimirova; Prof. Dr. Drenka Vukovi Ae; Dr. Chris F. Wright; Dr. Kerstin Zimmer, Ph D.