Dollar Strengthens as Traders Eye Iran Talks and U.S. Payrolls Report

The U.S. dollar gained against the yen and euro, supported by doubts surrounding an Iran peace deal and higher Treasury yields. A Financial Times report suggested Federal Reserve Chair Kevin Warsh might consider a September interest rate hike based on incoming data, with the monthly U.S. payrolls report expected to provide further clues on the Fed's policy path.