Stocks gain, dollar sags as Fed chief shores up rate cut prospects

LONDON (Reuters) - World stocks rose, global bond yields fell and the dollar weakened after Federal Reserve Chairman Jerome Powell bolstered expectations the Fed would cut U.S. interest rates soon.The pan-European STOXX 600 climbed 0.2% after losing 1.4% over the past four sessions. Germany's DAX futures rose and Britain's FTSE futures gained 0.3%. The oil and gas sector as well as defensive stocks led the gains.In his first day of testimony before Congress on Wednesday, Powell confirmed the..