The Hague International Tribunal, Permanent Court of Arbitration (PCA), released its ruling on the Philip-pine-China arbitration on the South China Sea (SCS) on July 12, 2016, and it could be an important turning point on how to deal with regional maritime rule of law in maintaining maritime security order. This session is designed to examine the challenges and prospects of maritime security order in East Asia after the SCS arbitration. This session features three presenters to speak on ‘How to integrate China into maritime order in East Asia?: obstacles & prospects’; ‘Future scenarios and approaches to maritime order in East Asia: what has to be done?’; ‘Is multilateral maritime security cooperation possible in East Asia?: a perspective from Southeast Asia.’