The U.S., Australia, and India face common challenges and opportunities in the Indo–Pacific region that are defined by their shared values and interests. These include sea-lane security, counterterrorism, nonproliferation, and disaster relief. A formal trilateral dialogue gives these three countries an opportunity to understand and act together to address current and future challenges more effectively. Such an attempt to arrive at a mutual understanding of each others’ concerns will help promote the Indo–Pacific as an area conducive to economic and political stability, security, free and open trade, and democratic governance.