Washington and Beijing are in a contest to develop AI-controlled weapons that will operate autonomously. The outcome could decide the global balance of power.

Alongside Sydney Harbour, engineers are working on a submarine that will be powered by artificial intelligence and will have no human crew. The project is being driven by a contest between the U.S., its allies and China to develop AI-controlled weapons that will operate autonomously, including warships and fighter jets. The outcome of this competition could determine the global balance of power.