Negative rates forever? Central bankers look for an exit

WASHINGTON (Reuters) - The world's most powerful policymakers are struggling to alleviate the pain of a slowing global economy with few levers left to pull and growing concern that one of them, negative interest rates, already is creating problems of its own.In an ideal world, elected officials would pull more of the weight with fiscal programs and structural reforms that would improve growth and allow interest rates to rise.But over three days of conversation here, the dilemma has become clear:..