Columbia International Affairs Online: Policy Briefs

CIAO DATE: 12/2010

Currency Wars?

William R. Cline, John Williamson

November 2010

Peterson Institute for International Economics

Abstract

More than a dozen countries, including Brazil, China, India, Japan, and Korea, have been intervening in the foreign exchange market to prevent their currencies from appreciating. There are fears that the second dose of quantitative easing in the United States (dubbed QE2) may worsen currency appreciation. These developments raise the prospect of a currency war, which the Group of Twenty (G-20) fears is gathering steam. Because many countries are simultaneously seeking to improve their balance of payments position, many are seeking a more competitive exchange rate. The laws of mathematics mean that some must be disappointed: A weaker exchange rate of one country implies a stronger rate of some other country or countries.