COLOMBO :Sri Lanka's central bank reduced the policy rate by 25 basis points in a surprise move on Thursday to foster stronger economic growth following a lingering financial crisis and to buffer any fallout from potential U.S. tariffs. The Central Bank of Sri Lanka (CBSL) changed the overnight policy rate to 7.75 per cent, it said in a statement. "The Board is of the view that this measured easing of monetary policy stance will support steering inflation towards the target of 5 per cent,