The SSN-AUKUS is a new submarine for the Australian Navy that will combine U.K. designs and U.S. technology for the first time. Some experts are even calling this weapon the future of underwater defense as it uses one key feature: interoperability.WSJ explains how, in order to counter China’s influence in the Pacific, the most extensive sharing of U.S. submarine tech in 70 years has led to growing integration between Western nations’ military systems.0:00 Is this submarine the future of underwater defense?0:39 The SSN-AUKUS’s key tech features2:00 What the Nuclear Non-Proliferation Treaty means for Australia2:59 Challenges facing the SSN-AUKUS