European Central Bank President Mario Draghi And Other Key Speakers At The European Banking Congress [Getty Images]

Adam Posen, president of the Peterson Institute For International Economics, speaks at the European Banking Congress at the Alte Oper concert hall in Frankfurt, Germany, on Friday, Nov. 21, 2014. European Central Bank (ECB) President Mario Draghi said the ECB must drive inflation higher quickly, and will broaden its asset-purchase program if needed to achieve that. Photographer: Martin Leissl/Bloomberg via Getty Images

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