As if the dollar didn’t have enough problems, Timothy Geithner took China’s bait yesterday and said he was “quite open” to its suggestion this week to displace the greenback with an “international reserve currency.” The dollar promptly fell and stocks followed, before the Treasury Secretary re-emerged to say “the dollar remains the world’s dominant reserve currency. I think that’s likely to continue for a long time.
Mr. Geithner is learning on the job, and yesterday’s lesson is that it isn’t smart to fool with currency markets when you are already tempting fate with a gigantic U.S. reflation. Treasury and the Federal Reserve are flooding the world with dollars to break the recession, and the world is rightly getting nervous. The solution floated by Chinese central bank governor Zhou Xiaochuan — an increased role for the International Monetary Fund — isn’t desirable. But his warning about the dangers of dollar weakness and exchange-rate instability is still worth heeding.