This book is the first of a series in which experts engage critically with identified aspects of expropriation law. The internationally diverse group of contributing authors offer valuable insight into the treatment of public purpose/interest related issues as they are canvassed in jurisdictions around the world. Some of these include: -the public purpose/interest requirement and the definition of the object of expropriation;-the role of public purpose/interest in distinguishing between expropriation and regulation of property;-public interest and the classification of expropriatory actions as administrative, statutory or constructive;-categorising of the notions of public interest and public purpose;-justifiability of expropriation without compensation;-consequences of a change in purpose after expropriation has been effected;whether an expropriation can be challenged on the basis that less invasive means were available for the state to realise the specific purpose;-whether the public interest could legitimately entail transfer of expropriated property to a party other than the state.