As the Iranian proxy in Yemen, the Houthi's have evolved from a guerrilla organisation to one capable of facing down a first-world military and becoming adept with ballistic missiles, maritime warfare, and influence operations in Western capitals. In this episode, Peter talks to Dr Michael Knights about what an effective – if morally dubious – 'train and assist' mission looks like when conducted by an adversary. It's not just about what you weapons you fight with, it's about how you fight and who (and how) they support you, ending with the lesson that military power is no absolute; it is only relative to the enemy.