Searching for sustainable regional trade agreements (RTAs) for East Asia, we quantitatively evaluated the likely impact of proposed East Asian RTA strategies─(i) the AFTA (a being-leftalone strategy), (ii) an ASEAN Hub RTA (a hub-and-spoke type of overlapping RTA strategy), (iii) the AFTA vs a China-Japan-Korea RTA (a duplicating or competing RTA strategy), (iv) an ASEAN+3 RTA (an expansionary ...