Gradualism is common in international cooperation, as states begin with limited cooperation and choose more ambitious targets slowly over time. However, most models of international cooperation are static and thus cannot explain gradualism. I show that when states can implement domestic reforms...

Environmental degradation is increasingly causing cross-border displacement of people, but countries have formed no treaties to facilitate collaboration on the issue. When is such collaboration feasible, and how should environmental displacement treaties be designed? We present a game-theoretic...

If major emitters fail to mitigate global warming, they may have to resort to geoengineering techniques that deflect sunlight from planet Earth and remove carbon dioxide from the atmosphere. In this article, I develop a strategic theory of geoengineering. I emphasize two key features of...

While neoliberal institutionalists argue that treaties facilitate collective action, many North-South regulatory treaties focus on largely national problems in developing countries. As such, these treaties present a puzzle: why a global treaty to address national regulatory problems? We argue...

In this article, I develop and evaluate a model of dynamic climate governance. The model is based on the premise that global warming is such a complex problem that present political realities do not allow an immediate solution to it. I propose that current mitigation activities should focus on...

Donors often condition foreign aid to recipients on policy adjustments. How do domestic interest groups influence a donor’s ability to credibly commit to implementing threats and promises? In our model, domestic interest groups in the donor country can mobilize to support the...