President Trump claims that U.S. strikes in Yemen have decimated Iranian-backed Houthi militants, but Pentagon officials privately admit to limited success in destroying their arsenal. The strikes have used $200 million worth of munitions in just three weeks, and the total cost could exceed $1 billion. The Pentagon may need to request supplemental funds from Congress. The strikes are aimed at pressuring the Houthis to halt attacks on international shipping lanes in the Red Sea.