Stock Market Today: Dow Drops 800 Points on New Tariff Threats; Treasury Yields Jump — Live Updates The Wall Street JournalTreasuries Join Global Bond Slide as Tariff Angst Grips Markets Bloomberg.comU.S. 30-year Treasury yield jumps as trade war fears reignite CNBCYields pop towards 5-month highs amid trade tensions and global bond selloff activity Seeking Alpha