We propose a model of trade agreements in which contracting is costly, and as a consequence the optimal agreement may be incomplete. In spite of its simplicity, the model yields rich predictions on the structure of the optimal trade agreement and how this depends on the fundamentals of the...

It is often claimed that investment treaties will dissuade host countries from phasing out foreignowned CO2-intensive production. This paper uses a very simple economic framework to examine how such a problem might be alleviated through treaty reform, including increased carve-outs from...