The EU Citizenship Directive defines the right of free movement for citizens of the European Economic Area. It applies to EU citizens and their family members who move to another Member State. This might at first seem like a straightforward definition, but immediately questions arise. Who determines if a person is an EU citizen at all? What about dual citizens of two Member States, or of one Member State and a non-Member State (a 'third State')? What is the position of EU citizens who move to one Member State, and then return to their home Member State? This book provides a comprehensive...