In an interconnected world, economic and political interests inevitably reach beyond national borders. Since policy choices generate external economic and political costs, foreign state and non-state actors have an interest in inflencing policy actions in other sovereign countries to their...

Politicians travel extensively abroad, for various reasons. One purpose of external visits is to improve bilateral economic relations. In this paper, I examine the effect of state visits on international trade. I use a large data set covering the travel activities of the heads of state of...

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...

Since Jean Monnet conceived the Coal and Steel Community, free trade has successfully prevented serious conflicts in Europe between democratically governed States with market economies. After six countries established the European Community, this principle has been extended successfully to its...

Under what conditions can the European Neighbourhood Policy achieve one of its main objectives: to resolve conflicts in the European Union's neighbourhood? In the spirit of Montesquieu and Monnet, the basic hypothesis of the EU is that closer economic integration encourages governments to take...

We study whether national leaders' foreign education influences their foreign policy, measured by voting behavior at the United Nations General Assembly (UNGA). We hypothesize that “affinity” - pre-existing or developed while studying abroad - makes leaders with foreign education more likely...

We study whether national leaders' foreign education influences their foreign policy, measured by voting behavior at the United Nations General Assembly (UNGA). We hypothesize that "affinity" - pre-existing or developed while studying abroad - makes leaders with foreign education more likely to...

During the past two centuries, western nations have successively extended the voting franchise to citizens of lower income. We explain this process of democratization as a rational way for incumbent elites to wage war effectively on other nations, as in a strategic game of international conflict...

This paper reviews the literature on the likely economic consequences of Brexit and considers the lessons of the Brexit vote for the future of European and global integration. Brexit will make the United Kingdom poorer because it will lead to new barriers to trade and migration between the...

After World War II, town twinning became popular, notably in Germany. This was mainly a reaction to the war experience, and it was aimed at creating renewed international understanding and co-operation between German cities and cities in other countries. The contacts created by town twinning...