https://cdnph.upi.com/ph/st/th/5831785075271/2026/upi/0da57dc8a0b94c22b5b83955fddaf138/v1.5/US-Iran-enter-second-day-of-no-new-attacks.jpg" /> After nearly two weeks of nightly bombing, the United States and Iran entered their second day of no new attacks Sunday, U.S. defense officials said.