This book takes a penetrating look at major challenges to the World Trade Organization and the future of trade liberalization.

In this paper, I assume that global intergovernmental organizations (GIGOs) function as "enablers" of interstate liberal politics by way of their multilateral institutional frameworks. To support this view, I recall and adapt the classical concept of "polyarchy," coined in the early 1950s by...

Geopolitical conflicts have increasingly been a driver of trade policy. We study the potential effects of global and persistent geopolitical conflicts on trade, technological innovation, and economic growth. In conventional trade models the welfare costs of such conflicts are modest. We build a...

This paper examines leadership in relation to supplying a global public good. Both the Kyoto Protocol and the Paris Agreement encourage the developed countries to take a lead in reducing emissions. Does a country benefit from taking a lead? When does leadership improve global welfare? The answer...