Mario Draghi’s move to shape eurozone monetary policy beyond his retirement date — at least through 2020 — may prove to be the best decision he ever made as European Central Bank president.

His nominated successor, current International Monetary Fund managing director Christine Lagarde, would come to the job without any central banking experience, and by most accounts devoid of the character that allowed Draghi to utter his famous promise in 2012 to do “whatever it takes” to keep the monetary union together.

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