According to the existing open-economy macroeconomics literature, a current account surplus is associated with a welfare loss only when distortions exist in either savings or investment, and bilateral imbalances do not matter when holding a country's overall imbalance constant. We propose a new...

We argue that existence of public good does not necessarily imply market failure, and illustrate this point in the context of international trade. An influential hypothesis states that export pioneers are too few relative to social optimum because the first exporter's action creates an...