Mario Draghi has promised the European Central Bank will return euro-area inflation -- currently 0.2 percent -- to its target of just under 2 percent. Yet there’s increasing doubt that his stimulus package of negative interest rates and asset purchases will achieve that within his own term as president. Less than 70 percent of economists surveyed by Bloomberg think Draghi will reach his goal by the time he steps down in 2019, compared with 85 percent last year.

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