Trump weighs US strikes in Yemen as Houthi attacks keep Riyadh airport closed

Donald Trump called the Riyadh airport attack "terrible" and said the US is evaluating whether to join Saudi Arabia's offensive against the Houthis, according to CBS News live updates. CBS News

CBS NewsIran War Updates: Deadly Houthi attacks keep Saudi airport closed as Trump considers U.S. strikes in YemenTrump considers joining Saudi attacks on Iran

What would a US role in Yemen need to look like to avoid repeating the mistakes of earlier interventions there?