The 1990s witnessed several acute currency crises among developing nations that invariably spread to other nearby at-risk countries. These episodes—in Mexico, Thailand, South Korea, Russia, and Brazil—were all exacerbated by speculative foreign investments and high-volume movements of...

There is no universally accepted definition of a currency crisis, but most would agree that they all involve one key element: investors fleeing a currency en masse out of fear that it might be devalued, in turn fueling the very devaluation they anticipated. Although such crises—the Latin...