Systematically taking apart many of the established orthodoxies concerning the delimitation of maritime boundaries and drawing on original archival research, this hugely significant book reassesses the importance of factors such as navigation, security, economics and other related matters. Exploring these questions through the lens of predominant interest, it reveals the role that such factors can and do play. It is a game-changing contribution to the study and practice of maritime boundary delimitation. -- Sir Malcolm Evans, KCMG OBE, University of Oxford, UK Ioannides unconventionally but persuasively advocates for a better way of engaging in maritime delimitation, one that takes account of non-geographical elements, including fishing, environmental, security, and navigational interests. In short, a more comprehensive concept rooted in early jurisprudencethe predominant interest of the relevant Statesshould now take center stage. -- Sean D. Murphy, George Washington University, USA