Paul Krugman weighs in on the mistakes of the PBOC

China "went for a small move that was sufficient to destabilize expectations while producing trivial benefits," economists Paul Krugman writes in the New York Times.

The WSJ also takes a look at the yuan's latest move and explains the mechanics and reasoning for the PBOC move.

"The yuan has more room to fall to regain currency competitiveness with regional peers on an inflation-adjusted basis," they write.