We evaluate the sensitivity of the case for an R&D subsidy in an export sector when the outcome of R&D is uncertain and when the resulting product market is oligopolistic. Investments in R&D are assumed to induce either first order or mean-preserving second order shifts in the distribution of a...

We construct a dynamic general equilibrium model in which the typical industry colludes by threatening to punish deviations from an implicitly agreed upon pricing path. We argue that models of this type explain better than do competitive models the way in which the economy responds to aggregate...

Trade negotiations occur through time and between the governments of many countries. An important issue is thus whether the value of concessions that a government wins in a current negotiation may be eroded in a future bilateral negotiation to which it is not party. In the absence of rules that...

The discomfort a government suffers from speculation against its currency determines the strategic incentives of speculators and the scope for multiple currency-market equilibria. After describing an illustrative model in which high unemployment may cause an exchange- rate crisis with...

I develop two models in which debt repurchases by highly indebted sovereign nations are advantageous for all parties. The models are based on the idea that when sovereign debts are large, bargaining costs are large. Creditors spend more resources convincing the debtor that they are tough when...

To what extent must nations cede control over their economic and social policies if global efficiency is to be achieved in an interdependent world? This question is at the center of the debate over the future role of GATT (and its successor, the WTO) in the realm of labor and environmental...

The existing economics literature on international trade agreements focuses on tariff agreements covering trade in goods, and offers an explanation for core features of the GATT. Tariffs play almost no role in services markets, however, and the existing models cannot account for the dramatically...