The world today remains complex, dynamic, and uncertain. The military capabilities of nation states and non-state actors are improving across all domains. Nations around the world continue to execute long-term military modernization programs, including capabilities that pose an existential threat to the United States. Additionally, non-state actors show increasing ability to strategically impact worldwide stability and the security of the U.S. and our key allies. Nuclear weapon ambitions and nuclear, chemical and biological technologies proliferation continue, increasing the risk that others...