The Trump administration has launched strikes on Iran-backed Houthi rebels in Yemen to send a message that their attacks need to stop. The strikes are part of the Trump doctrine, which aims to implement different policies than the previous administration. The Houthis have proven difficult to defeat due to their hiding of weapons in caves and their increased capabilities. The US strikes are a test to see if they will have an impact on the Houthi threats. Iran is also being warned through the strikes to end its support for the Houthis.