A special crossover episode with This Is Not A Drill, our geopolitics podcast. Why are UK and US navies defending Western shipping against missile attacks and hijacks from rebels in the poorest country in the Middle East? The battle between the Yemeni government and the Houthi militia threatens to spill over into a wider regional conflict – and Iran is fanning the flames. What happens next? Gavin Esler talks to Helen Lackner, author of Yemen In Crisis, to find out who the Houthi are, what they want, what their rebellion means for the West… and whether the war could spread. Follow This Is Not A Drill on your favourite podcast provider for weekly interviews and reports on the world’s flashpoints. Written and presented by Gavin Esler. Art by James Parrett. Bunker music by Kenny Dickinson. TINAD music by Paul Hartnoll – https://www.orbitalofficial.com. Group Editor Andrew Harrison. THE BUNKER and THIS IS NOT A DRILL are Podmasters Productions Learn more about your ad choices. Visit podcastchoices.com/adchoices