The European Central Bank on Thursday launched a new round of monetary easing that surprised markets with its open-ended commitment, as it will last until inflation in the eurozone “robustly” converges toward its official target of “below but close” to 2%.

ECB president Mario Draghi famously pledged in 2012 to do “whatever it takes” to keep the eurozone together. From now on, the central bank’s motto seems to be “whatever time it will take.”