The book clarifies key conceptual issues surrounding ADIZs and their influence on maritime territorial disputes in the context of the Senkaku/Diaoyu island dispute. It uniquely offers a detailed analysis of national legislation on ADIZ, suggesting that ADIZ might be evolving customary international law. The book demonstrates that aerial zones do not necessarily violate the freedom of overflight, as the airspace above the EEZ may have a dual legal status, allowing for sui generis zones. Furthermore, it shows that ADIZs do not conflict with fundamental principles of international air law or the ICAO-Council's authority to establish rules in international airspace.