Draghi leaves ECB with legacy still in question

This week, Mario Draghi exited as president of the European Central Bank (ECB), following one of the most dramatic periods in history for monetary policymakers.

In 2012, he had promised, in a landmark speech, that he would do whatever it would take to preserve the eurozone, and he was true to his word. Under his stewardship, official interest rates were taken to zero; various bank deposit rates were taken into negative territory; and massive bond-buying occurred under the mantle of quantitative easing (QE).