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 provides a minimalist derivation of the gravity equation and uses it to identify three common errors in the literature, what we call the gold, silver and bronze medal errors. The paper provides estimates of the size of the biases taking the currency union trade effect as an example....