The book discusses a variety of issues related to two important international law institutions: international legal personality and recognition. Respective studies concern the legal situation and classification of various categories of non-recognised entities, the obligation to recognise and not to recognise specific subjects, rights and obligations of those entities (including, for example, state immunity and obligations in respect of human rights), and international liability for unlawful recognition. The authors of the texts are both eminent scientists, recognised specialists in the field of international law, as well as young lawyers, just starting their adventure with research work. The authors come from various parts of the world and represent a diverse approach to research methodology. Authors: Maurizio Arcari, Chun-i Chen, Władysław Czapliński, Natividad Fernández Sola, Łukasz Gruszczyński, Shotaro Hamamoto, Agata Kleczkowska, Anne Lagerwall, Margaret E. McGuinness, Marcin Menkes, Enrico Milano, Stefan Oeter, Dagmar Richter, Przemysław Saganek, Galina Shinkaretskaia, María Isabel Torres Cazorla, Szymon Zaręba