Brent Droste Sadler is a twenty-six-year Navy veteran with numerous operational tours on nuclear powered submarines. He has been a member of personal staffs of senior defense department leaders and was a military diplomat in Asia. He writes about great power competition, advanced technologies, and building the Navy the nation needs. Sadler is the author of U.S. Naval Power in the 21st Century: A New Strategy for Facing the Chinese and Russian Threat. Sadler lives in Arlington, Virginia.