The dollar was firm on Monday as uncertainty clouded a tentative US-Iran peace deal following threats from President Donald Trump to restart the war in the Middle East and Tehran's announcement it had closed the Strait of Hormuz.

The dollar remains strong against most currencies, nearing a 40-year low against the yen, as a potential US-Iran peace deal hangs in the balance. Federal Reserve projections…

The dollar was firm on Monday as uncertainty clouded a tentative US-Iran peace deal following threats from President Donald Trump to restart the war in the Middle East and…