Asian currencies and the U.S. dollar traded in narrow ranges on Tuesday as investors stayed cautious ahead of key U.S. inflation data that could influence expectations for the Federal Reserve’s interest-rate outlook. Currency markets are now focused on upcoming U.S. consumer price index (CPI) figures for clearer signals on inflation and future Fed policy. Recent underlying inflation figures came in below expectations, easing pressure on policymakers to raise rates immediately. Elsewhere in Asian forex markets, USD/KRW slipped about 0.2%, while the Singapore dollar was largely flat. Fading expectations for a U.S.-Iran agreement have supported crude prices, potentially adding to inflation concerns and complicating the outlook for global interest rates and currency markets.