Global Markets: Stocks gain, oil and dollar retreat on hopes for US-Iran resolution

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 nL4N40W0L7 and a U.S. official said there was forward motion on trying to get to an agreement. MSCI's broadest index of Asia-Pacific shares outside Japan was up 1% in early Asia trade, while Japa...