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I think I still see in the underlying core drivers of economic activity considerable strength.

So I think that the U.S. economy continues to perform very, very well.

And I think to me that was evident. The headline figure was off a little bit, but for reasons

that are peculiar and not really indicative of underlying strength.

That was U.S. Treasury Secretary Janet Yellen,

speaking to Reuters editor-in-chief Alessandra Galloni last month.

The strength of the U.S. dollar and question marks

over whether China should devalue its currency

are the focus of this week's

views room.

Welcome back to the views room.

I'm Amy Donlan.

This week we are delving into currencies.

The US dollar is flexing its muscles just as China's Rinambi is showing strain.

These two diverging fortunes may increase the tension between the world's largest economies

...