Different countries have been following different reform paths since the early 1990s. We develop a simple dynamic model of policy reform that captures some of the determinants that underlie these differences. The model emphasizes the interaction between domestic institutions and international...

How large are optimal tariffs? What tariffs would prevail in a worldwide trade war? How costly would be a breakdown of international trade policy cooperation? And what is the scope for future multilateral trade negotiations? I address these and other questions using a unified framework which...

In a recent paper, Barrett (2006) reaches the conclusion that in general the answer to the question in the title is no. We show in this paper that a focus on the R&D phase in the development of breakthrough technologies changes the picture. The stability of international treaties improves and...

We consider a 3 country world in which each country's import market is served by competing exporters from its 2 trading partners. We assume that weak multilateral enforcement mechanisms prevent governments from implementing efficient trade policies through a multilateral agreement requiring...

A simple dynamic game is used for analyzing international environmental problems and climate agreements. Different countries are, over time, emitting as well as investing in green technology. In this framework, we can analyze the business-as-usual outcome, short vs. long term agreements,...