Earlier on Thursday, the ECB kept rates unchanged for the second month in a row, after increasing them in April for the first time in almost two years.
The central bank wants to raise rates again in July to curb inflation in some of the eurozone's 17 member states.
But it has to balance that against the need to leave rates low to boost growth in nations such as Greece and Portugal.
The central bank wants to raise rates again in July to curb inflation in some of the eurozone's 17 member states.
But it has to balance that against the need to leave rates low to boost growth in nations such as Greece and Portugal.
