GLOBAL MARKETS-Stocks Gain, Oil and Dollar Retreat on Hopes for US-Iran Resolution

GLOBAL MARKET - SINGAPORE. Asian stocks advanced while oil prices and the safe-haven dollar fell on Tuesday as the U.S. said it continued to engage with Tehran to make a deal even as it blocked Iran's ports after the collapse of peace talks over the weekend.

Sources told Reuters that both sides have left the door open to dialogue and a U.S. official said there was forward motion on trying to get to an agreement.