Yin-Wong Cheung is Hung Hing Ying Chair Professor of International Economics and Director of the Global Research Unit at City University of Hong Kong. Frank Westermann is Professor of Economics and Director of the Institute of Empirical Economic Research at Osnabrueck University, Germany. Paul De Grauwe is Professor of Economics at the Catholic University of Leuven, the author of The Economics of Monetary Union, and the editor of three previous books in the CESifo Seminar series. Peter M. Garber is Global Strategist at Global Markets Research of Deutsche Bank.