The dollar eased for a second straight day on Thursday as hopes for a de-escalation in the Iran-U.S. war supported oil-exposed currencies, while Tokyo resumed its verbal intervention in support of the yen, making speculators cautious. The United States and Iran are edging toward a limited, temporary agreement to halt their war, sources and officials have said, with a draft framework that would stop the fighting but leave the most contentious issues unresolved.