(Bloomberg) -- The European Central Bank requires additional evidence that inflation is returning to its goal before it can safely begin loosening monetary policy, according to Vice President Luis de Guindos.Most Read from BloombergMusk Says Putin Can’t Lose in Ukraine, Opposes Senate BillStanChart Weighs Break Up of Corporate, Investment BankThe Brutal Reality of Plunging Office Values Is HerePutin Seeks Revenge on a World Order He Once Wanted to JoinRetail Traders Are Losing Billions in India’