Disputed maritime areas exist around the world, and in many cases the affected States have not been able to reach agreement on cooperative arrangements or regulate commercial activities within the area. Where a claimant coastal State increases their level of unilateral activity, such as in the South China Sea, long-standing conflicts remain difficult to resolve. This book examines the rights and obligations States have under international law concerning disputed maritime areas in the first comprehensive treatment of this highly topical and pressing issue. It analyses conventional law, general international law, judicial decisions, State practice and academic opinions that shine light on the international legal framework applicable in disputed maritime areas. Proposing practical solutions for interpreting and applying the applicable international law, the book discusses the extent to which it currently provides clear guidance to States, and how international courts and tribunals have dealt with cases related to disputed maritime areas.