欧洲央行行长德拉吉在2012年所做的著名承诺 — — “不惜一切代价”捍卫欧元 — — 让欧洲央行也走上了同样的道路 — — 先是零利率，然后是量化宽松，现在是负政策利率。
European Central Bank President Mario Draghi’s famous 2012 promise to do “whatever it takes” to defend the euro took the ECB down the same path – first zero interest rates, then quantitative easing, now negative policy rates.