"The Great Recession of 2008 revealed a new threat to Americans' sense of security: the global economy. The meltdown of domestic housing and financial markets shook the international economy to its core, exposing weaknesses in the Eurozone that now threaten not only a global recovery but also the U.S. economic recovery. What were the causes of the Greek debt crisis? Why don't the solutions proposed by the European Union seem to be working? How could the European crisis come back to weaken the United States economy? Richard Parker of the Harvard Kennedy School explores these issues and more. "