U.S. Treasurys were flat on Wednesday as investors monitored signals from the White House that talks to resolve the Middle East conflict will resume this week. The yield on the 10-year U.S. Treasury note — the key benchmark for government borrowing — was flat at at 4.2558%. The 2-year Treasury note yield, which is more sensitive to short-term Federal Reserve interest rate decisions, also remained unchanged by 4:30 a.m. E.T., at 3.7572%. The longer-dated 30-year Treasury bond yield was also down