Portugal PM backs Spain's Calvino as candidate to head Eurogroup

LISBON/MADRID (Reuters) - Portugal backs the candidacy of Spanish Economy minister Nadia Calvino to head the Eurogroup, the country's Prime Minister Antonio Costa said in an interview on Sunday."It would be very important for that position to remain in the socialist family. We have to agree among all, but of course Nadia Calviño meets all the conditions," Costa told the Spanish newspaper La VanguardiaCalviño, 51, who is also vice-president of the Spanish left-wing coalition government, is seen..