Shades of Plaza Accord Seen in Barrage of Stimulus After G-20

In the past few weeks, officials from China, the euro area, Japan, the U.S. and the U.K. have taken a barrage of actions to keep the world economy afloat and currency markets calm.

That's led some analysts to conclude that there is indeed a secret Shanghai Accord, akin to those reached in an earlier era at the Plaza Hotel in New York and at the Louvre Museum in Paris. The Federal Reserve on Wednesday capped off the series of moves by global policy makers by forecasting a shallower-than-anticipated rise in interest rates this year, with Chair Janet Yellen stressing the risks from a weaker global outlook and market turbulence.

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"There seems to be some kind of tacit Shanghai Accord in place," said Fels, who is global economic adviser for Pimco, which oversees $1.43 trillion in assets. "The agreement is to roughly stabilize the dollar versus the major currencies through appropriate monetary policy action, not through intervention."