Outgoing leader Jeroen Dijsselbloem, left, of the Netherlands smiles after handing over power of the so-called eurogroup to Portugal&#039;s Mario Centeno, right, in Paris, Friday, Jan.12, 2018. The euro zone&#039;s new leader says he hopes to use his term to bring the 19 countries that use the currency closer together and toughen their ability to weather future crises. (AP Photo)