This paper reviews the scientific contributions of Paul Krugman to the study of international trade, on the occasion of his receipt of the 2008 Nobel Memorial Prize in Economics. A simplified exposition is presented of some of his principal findings, including: the effects of trade on firm scale...

This paper develops and characterizes an index of trade policy restrictiveness defined as the uniform tariff equivalent which maintains the same volume of trade as a given set of tariffs, quotas, and domestic taxes and subsidies. We relate this volume-equivalent index to the Trade...

I introduce a utility-consistent benchmark for international comparisons of real income, the GAIA (‘Geary-Allen International Accounts’) System. It coincides with the Geary method (which underlies the Penn World Table) when preferences are Leontief and with the EKS method (favoured by OECD)...

The theory of strategic trade policy yields ambiguous recommendations for assistance to exporting firms in oligopolistic industries. Some writers have, however, suggested that investment subsidies are a more robust recommendation than export subsidies. We show that, though ambiguous in...

We present a new model of multi-product firms (MPFs) and flexible manufacturing and explore its implications in partial and general equilibrium. International trade integration affects the scale and scope of MPFs through a competition effect and a demand effect. We demonstrate how MPFs adjust in...

A two-country model of oligopoly in general equilibrium is used to show how changes in market structure accompany the process of trade and capital market liberalisation. The model predicts that bilateral mergers in which low-cost firms buy out higher-cost foreign rivals are profitable under...

This paper examines the implications for strategic trade policy of different assumptions about precommitment. In a dynamic oligopoly game with learning by doing, the optimal first-period subsidy is lower if firms cannot precommit to future output than if they can; and is lower still if the...

This paper examines the rationale for multilateral agreements to limit investment subsidies. The welfare ranking of symmetric multilateral subsidy games is shown to depend on whether or not investment levels are "friendly", raising rival profits in total, and/or strategic complements, raising...

The paper describes the insights which trade theory can provide into economic developments in Ireland during the 1930s. First, a version of Ronald Jones's "specific factors" model is applied to the period after 1932, when a policy which combined industrial tariff protection and controls on...

This paper examines optimal policy towards a home exporting firm which competes on price with a foreign firm. Two policy instruments are compared: an output subsidy and a price subsidy. The paper also considers two games: the conventional ex ante game, in which the government sets the value of...