If Europe has a single market and a single currency, it needs a single bank regulator.

There have, of course, been many examples in history in which currency unions or single currency states have broken up.

This is no way to secure the future of the single currency.

(c) TRANSITION TO A SINGLE CURRENCY SYSTEM (IDB.29 1 Add.1)

Napoleon saw the scheme as a potential basis for a single world currency.

Large portfolio investors don t put all of their funds in a single currency.

At the time, Delors presented the introduction of a single currency as a way to complement or complete the Single Market.

It hasn t happened in Greece only because Greece is trapped in the single currency.

The case for capital market integration, and then for a single currency, was similar.

Since the single currency was France s condition for accepting German reunification, Germany played along.

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?

But what would happen then? There has always been a debate about whether it is possible to have a single market without a single currency.

Because SDRs are denominated in several national currencies, no single currency would enjoy an unfair advantage.

They are also two single currency areas the dollar and, for much of Europe, the euro.

The Nobel laureate Robert Mundell laid out the conditions under which a single currency could work.

Jacques Delors, one of its architects, once called the single currency the jewel in Europe s crown.

The current plan is to establish an African Economic Community with a single currency by 2023.

Indeed, in the extreme, some countries could find themselves considering whether to leave the single currency altogether.

No one doubts that Germany and most other eurozone members would prefer the single currency to continue.

The idea that sharing a single currency also means accepting limitations on fiscal sovereignty is not new.

The implications of pricing oil in any single currency are more far reaching than most people think.

First, there is no substitute for timely and coordinated action when the single currency is under pressure.

A single currency means a single monetary policy and a single interest rate, even if economic conditions particularly cyclical conditions differ substantially among the member countries of the European Economic and Monetary Union (EMU).

The African Union is now aiming at pooling all the continent s currencies into a single currency by 2028.

The international monetary system is likely to cease being dominated by a single currency over the same years.

The attempt to establish a single currency for 16 separate and quite different countries was bound to fail.

In reality, of course, a single currency or fixed exchange rate is not needed for trade to flourish.

Yet, despite all this, Lukashenko manages to avoid implementing economic projects profitable to Russia (i.e., a single currency).

The final question is what such a eurozone banking union would mean for the single financial market, and especially for EU countries that are outside the single currency.

The first step towards a narrative capable of replacing earlier rallying cries like no more war and a single market and a single currency is to set out Europe s interests.

They would also be at least temporarily unable to borrow and would be strongly tempted to leave the single currency.

Even if most eurozone countries retain the single currency, it will be because abandoning the euro would be financially painful.

To keep the eurozone intact, regardless of the cost, became Europe s only viable option once the single currency was adopted.

The sad news, however, is that as the structure of the Union (for example, the single market and the single currency) has been put in place, the spirit of unity has died.

In June, the Euro 2012 football (soccer) championship readily lent itself as an analogy to the turmoil surrounding Europe s single currency.

Perhaps the same is true of the single currency, which will derive strength and validation from the challenges that it overcomes.

European believers insist that the single currency is really founded on the strong political will to secure eternal peace in Europe.

China, with 1.3 billion people, is just one country and the European Union, with some 500 million people, functions as a single economic market, with most of its members sharing a single currency.

In addition, the single currency weakens the market signals that would otherwise warn a country that its fiscal deficits were becoming excessive.

Thatcher supported Britain s entry into the European Union in order to benefit from free trade, but she forcefully opposed joining the single currency.

While the euro has not caused France s economic problems, its politicians commitment to the single currency represents an insurmountable barrier to solving them.

As time passes, the coming of the single currency and the way that the euro has been implemented is generating more and more unease.

The pro euro politicians ignored economists warnings that imposing a single currency on a dozen heterogeneous countries was bound to create serious economic problems.

Unless and until US consumption patterns change or a rebounding dollar increases oil production, Americans will bear the brunt of single currency oil pricing.

Indeed, without the single currency, many of these countries would have succumbed to a downward spiral of devaluation, default, and recourse to the IMF.