Riyadh’s decision to join the US in striking sites associated with the Iran-backed Popular Mobilisation Forces further complicates a chaotic war

Attacks come as Saudi Arabia intercepts drones and Iran warns of 'any action' to maintain its control of Hormuz.

Iraqi militias backed by Tehran are the latest targets in the ever-expanding conflict.

U.S. and Saudi air forces struck Iran-backed proxy militias in Iraq, the first announced joint flight and first Saudi attack on Iraq.