The paper argues that East Asian regionalism is fragile because (i) each nation's industrial competitiveness depends on the smooth functioning of "Factory Asia" - in particular for intraregional trade; (ii) the unilateral tariff-cutting that created Factory Asia is not subject to WTO discipline...

This paper presents two empirical tools to quantify the impacts of tariff changes on bilateral trade and welfare. Both tools are rooted in the structural gravity literature. The first tool estimates the impact of tariff changes on bilateral trade for 5,020 products in a partial equilibrium...