What is the extent of currency diversification in the international monetary system? How has it evolved over time? In this paper, we quantify the degree of currency diversification using regression methods of currency co-movements to determine the extent to which national currencies across the world belong to a reserve currency bloc. We then use these estimates to calculate the economic size of each currency bloc. A key contribution of our paper is that we quantify the size of the Chinese renminbi bloc. Our analysis suggests that the international monetary system has transitioned from a bi-polar system - consisting of the U.S. dollar and the euro - to a tri-polar one that includes the renminbi. The dollar bloc is estimated to continue to dominate, having the largest share in global GDP (40 percent), followed by the renminbi (30 percent) and the euro blocs (20 percent). The geographical area of influence for the RMB bloc appears to be most evident among the BRICS’ currencies. The British pound and the Japanese yen blocs appear to play minor roles.

This volume explores East Asia's macroeconomic experience in the 1980s and the economic impact of East Asia's growth on the rest of the world. The authors explore the causes of capital flows, changes in trade balances, and exchange rate fluctuations in East Asia and their effects on other countries. These fourteen papers are organized around four themes: the overall determinants of growth and trading relations in the East Asian region; monetary policies in relation to capital controls and capital accounts; the impact of exchange rate behavior on industrial structure; and the potential for greater regional integration. The contributors examine interactions among exchange rate movements, trade balances, and capital flows; how government monetary policy affects capital flows; the effect of exchange rates on industrial structure, inventories, and prices; and the extent of regional integration in East Asia.

The IMF Working Papers series is designed to make IMF staff research available to a wide audience. Almost 300 Working Papers are released each year, covering a wide range of theoretical and analytical topics, including balance of payments, monetary and fiscal issues, global liquidity, and national and international economic developments.

" In this important new book, C.H. Kwan asks whether the Japanese yen can, or will, replace the dollar as the key currency in East Asia. Kwan analyzes the implications for Japan and Asia's developing countries should they come together to form a yen bloc--a grouping of countries that use the yen as an international currency and maintain stable exchange rates against the yen. Combining academic analysis with his experience advising the Japanese prime minister and the Japanese minister of finance, Kwan concludes that a yen bloc might benefit Asia's developing countries--as well as Japan--while contributing to a more stable international monetary order. Kwan's book represents the first attempt to explore systematically the possibility of monetary integration in Asia. It also provides a vision for regional integration in Asia in the twenty-first century. "

The next financial collapse will resemble nothing in history. . . . Deciding upon the best course to follow will require comprehending a minefield of risks, while poised at a crossroads, pondering the death of the dollar. The U.S. dollar has been the global reserve currency since the end of World War II. If the dollar fails, the entire international monetary system will fail with it. But optimists have always said, in essence, that confidence in the dollar will never truly be shaken, no matter how high our national debt or how dysfunctional our government. In the last few years, however, the risks have become too big to ignore. While Washington is gridlocked, our biggest rivals—China, Russia, and the oil-producing nations of the Middle East—are doing everything possible to end U.S. monetary hegemony. The potential results: Financial warfare. Deflation. Hyperinflation. Market collapse. Chaos. James Rickards, the acclaimed author of Currency Wars, shows why money itself is now at risk and what we can all do to protect ourselves. He explains the power of converting unreliable investments into real wealth: gold, land, fine art, and other long-term stores of value.

HANSGENBERG An international monetary system should provide a stable and predictable environment for international trade and investment. At the very least, it should not by itself be a source of disturbances in the world economy, and it should be designed so that policy errors or unforeseen shocks are not unduly transmitted between countries. In this perspective, worldwide integration of goods and financial markets present a particular challenge. Such integration increases the cross-border effects of economic policies at the same time as interlocking payments and financial systems transmit financial disturbances rapidly throughout the world. As the degree of integration and interdependence changes over time, is not a foregone conc1usion that international monetary institutions and mechanisms always remain well adapted to the state of the world economy. Occasional review of the performance of the system as well as proposals for improvements are therefore necessary. The contributions to this volume have l been brought together with this in mind.