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...

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...

The growing spread of globalization creates a genuine need for international tax reforms. In this we establish the neutrality of border-tax adjustments of the income tax; the welfare dominance of residence-based over source-based income taxation, albeit at the cost of a larger trade deficit; and...

We are motivated by the unique migration experience of Israel of a supply-side shock triggering skilled immigration and the concurrent decline in welfare-state redistribution. This paper develops a model, which can provide an explanation for the mechanism through which a supply-side shock...

We develop a political-economy model of economic union and compare the competion regime to the coordination regime. Key policy differences emerge between the two regimes: concerning the generosity of the welfare state and the skill composition of migration. We argue that the differences between...