Moreover, global currency markets would be disrupted, and the global economy would deteriorate.

It remains a noncombatant in the global currency wars.

Some have accused Japan of fueling a global currency war.

Global imbalances and currency misalignments could well wreck the global recovery and push the world into the protectionist mire.

But is China really to blame for the eruption of a global currency war?

What, then, of the costs? Why don t all nations join currency areas, or why not create a single global currency, as Nobel laureate Robert Mundell suggests?

With China retaining its under valued currency policy, dollar depreciation can aggravate global deflationary forces.

Given China s expanding global influence, the renminbi s emergence as a new international currency is inevitable.

NEW YORK Today s debates over currency wars reveal two paradoxical features of the global economy.

The common currency is the canary in the mine of the global exchange rate system.

But currency adjustments must be part of an internationally coordinated plan to reduce global imbalances.

Developing nations should also push for a Tobin tax a tax on global foreign currency transactions.

Asymmetries in currency markets are a particularly important aspect of economic power, since they underlie global trade and financial markets. By limiting the convertibility of its currency, China is avoiding currency markets ability to discipline domestic economic decisions.

The deficiencies of current arrangements are why the world monetary system should be based on a truly global reserve currency a fiduciary currency backed by the world s central banks.

And the US dollar reserve currency system the backbone of the current global financial system is fraying.

He built up enormous foreign currency reserves, which cushioned the blow of the 2008 global economic crisis.

Artificially low exchange rates, restrictions on capital flows, and excessively large currency reserves all create global imbalances.

ITHACA Scarcely a week passes without news about the ascendance of China s currency, the renminbi. But China has a long way to go before its currency can rival let alone displace the US dollar as the dominant global reserve currency.

How would the exchange rate be set for the new currency? The obvious choice would be to start by exchanging one new franc for one euro and then leave it to the global currency markets to re price the new currency.

So, in Yekaterinburg, Russian President Dmitri Medvedev declared that there can be no successful global currency system if the financial instruments that are used are denominated in only one currency.

A truly multilateral system, organized around a quasi global currency and centralized management of global liquidity, remains a possible outcome, but not the most likely one.

Anxiety over unconventional monetary policies and currency wars must not continue to dominate global policy discussions, especially given last month s pledge by G 20 leaders not to engage in competitive currency devaluations.

But China is likely to increase its voice on one issue the US dollar s status as global reserve currency.

As China s global economic role increases, its labor costs will rise and its currency will appreciate, eroding its competitiveness.

Discussion of China s currency focuses around the need to shrink the country s trade surplus and correct global macroeconomic imbalances.

While global leaders expand IMF resources and attempt to coordinate international financial regulation, trade and currency tensions are growing.

TOKYO The risk of global currency and trade wars is rising, with most economies now engaged in competitive devaluations.

Asymmetries in currency markets are a particularly important aspect of economic power, since they underlie global trade and financial markets.

The first is the need for a truly global reserve currency, perhaps based on the IMF Special Drawing Rights (SDRs).

The euro s current problems are, instead, a reflection of unresolved Europe wide and global problems. The common currency is the canary in the mine of the global exchange rate system.

Sarkozy s rhetoric suggests that he hankers after new international agreements on exchange rates, and, indeed, perhaps a new global reserve currency.

SHANGHAI The question of how much China s currency should appreciate to rebalance its trade has become a global hot button issue.

A global system for prudential regulation and supervision a revamped IMF managing a global reserve currency, coordinating global macroeconomic policy, and providing agile credit lines and an international debt court all of these must be on the agenda.

At the international level, the standing of US supplied public goods (including the dollar as the global reserve currency) faces gradual erosion.

But if Japan starts to intervene directly in global currency markets to ensure a weaker yen, neighboring competitors will respond in kind.

This would overcome both the inequities and the instability that is inherent in a global reserve system based on a national currency.

In Global Development Horizons 2011, the World Bank presents what it believes to be the most probable global currency scenario in 2025 a multicurrency arrangement centered on the dollar, euro, and renminbi.

The European Monetary System began as a high level reaction to global currency chaos, and in particular to the depreciation of the dollar in 1977 and 1978, which seemed to threaten its continued role as the major international reserve currency.

Second, the sheer size of today s global economy means that there is now room for deep and liquid markets in more than one currency.

China, questioning the wisdom of putting the fate of the world economy in the US dollar, has proposed the creation of a global currency.

Otherwise, they would not be calling so publicly for the International Monetary Fund to advance an alternative to the dollar as a global currency.

This is particularly true of the quantitative easing now underway in the United States, because the American dollar is the major global reserve currency.

On their own, currency markets will not bring about the growth enhancing global economic rebalancing that is needed. Better policies at the national, regional, and global levels are also essential and that requires better politics.

While hardly denting global trade imbalances, a small move would bring in a flood of foreign capital, overwhelming China s currency defenses and leading to chaos.

This is the strongest argument for subjecting China s currency policies or large macroeconomic imbalances like Germany s trade surplus to greater global discipline than currently exists.