The United States and Canada have adopted a new joint framework for modernizing North American Aerospace Defense Command capabilities to defend against advanced Russian and Chinese air- and sea-launched cruise missile threats, a policy step that lays the groundwork for future collaborative investments in new technologies across three broad areas: sensors, command and control, and interceptors. On Aug. 17, the Pentagon announced that Defense Secretary Lloyd Austin and Canadian Defense Minister Harjit Sajjan had agreed to a joint statement on...