TOKYO, May 1 : Japan's yen rebounded sharply against the U.S. dollar on Thursday after authorities intervened to prop up the embattled currency from near two-year lows. The yen surged as much as 3 per cent in London trading hours after Japanese Finance Minister Satsuki Katayama warned that "decisive" action was approaching. Two sources familiar with the matter told Reuters that officials had intervened to buy the yen after it sank to its weakest level against the dollar since July 2024. The yen