Spain proposes economy minister Calvino for Eurogroup chief

MADRID (Reuters) - Spain has proposed its Economy Minister Nadia Calvino to head the influential Eurogroup of 19 euro zone finance ministers, the government said on Thursday, becoming the first country to formally announce a candidate.Calvino, also a deputy prime minister in Spain's left-wing coalition government, had been tipped as a front-runner, though Luxembourg's socialist finance minister Pierre Gramegna and centre-right Irish counterpart Pascal Donohoe are other potential candidates...