In the early hours of a Wednesday morning, Saudi Arabia and the United States struck Iran-backed militias inside Iraq, responding to intercepted drones aimed at Saudi oil infrastructure — a moment that distills decades of proxy rivalry into a single, volatile exchange. The action places Iraq once again at the center of a contest it did not choose, caught between the gravitational pull of two regional powers whose ambitions have long been settled on borrowed ground. Saudi Arabia insists it seeks no escalation, yet in a region where every defensive act is read as an opening move, the distinction