All down with the buck

Global leaders must find a way to unravel lop-sided trade and investment flows or risk a slump in the U.S. dollar that would create havoc for the world economy.

An international agreement along the lines of the 1985 Plaza Accord "on a bigger scale" is needed to unwind the imbalances that have resulted in the U.S. current account deficit swelling to a record $805 billion and surpluses in China, the rest of Asia and Europe.

A disorderly unwinding would play havoc not only with the U.S. but with the world economy. What the world needs right now is something like the Plaza Accord but on a bigger scale.

A slump in the dollar could prompt U.S. policy makers to raise U.S. interest rates, causing a decline in house prices to accelerate and curbing consumption among the heavily-indebted consumers who represent 70% of the world's biggest economy. A subsequent slide in corporate investment would have a "chilling" effect on the global economy.

The 1985 Plaza Accord precipitated an appreciation in the yen that eventually led to an asset bubble in Japan that burst in the early 1990s, leading to a 15-year period of lackluster growth during which the world's 2nd-largest economy had 3 recessions.

Japan took most of the brunt of the Plaza Accord, obviously any such agreement needs to be a lot more sophisticated than that.

Countries including China, Brazil, Mexico, India, Saudi Arabia, some of the wolrd biggest economies, should join the group of countries to come to an agreement, which currently has the countries members of the G-8 as participants.