The dollar index held around 98.8 on Monday after suffering significant losses last week, with a sharp rise in Treasury yields heightening concerns about the U.S. government’s mounting debt burden and reducing the greenback’s appeal. Treasury Secretary Bessent outlined a debt-buyback strategy dubbed a "Treasury twist," under which the government would repurchase longer-dated Treasury securities to influence the yield curve and manage borrowing costs. Investors also monitored Middle East tensions as the U.S. was expected to announce new sanctions against Tehran; Iran said the measures were "bound to fail." Markets are now focused on key U.S. economic data and Federal Reserve policy signals, including the July PCE inflation report and remarks from Fed Chair Kevin Warsh at the Jackson Hole economic symposium later this week.