Book excerpt: " Assessing the potential benefits and risks of a currency union Leaders of the fifteen-member Economic Community of West African States (ECOWAS) have set a goal of achieving a monetary and currency union by late 2020. Although some progress has been made toward achieving this ambitious goal, major challenges remain if the region is to realize the necessary macroeconomic convergence and establish the required institutional framework in a relatively short period of time. The proposed union offers many potential benefits, especially for countries with historically high inflation rates and weak central banks. But, as implementation of the euro over the past two decades has shown, folding multiple currencies, representing disparate economies, into a common union comes with significant costs, along with operational challenges and transitional risks. All these potential negatives must be considered carefully by ECOWAS leaders seeking tomeet a self-imposed deadline. This book, by two leading experts on economics and Africa, makes a significant analytical contribution to the debates now under way about how ECOWAS could achieve and manage its currency union, andthe ramifications for the African continent. "