On January 25, 2023, the US Department of Defense reissued Directive 3000.09, “Autonomy in Weapon Systems,” replacing the original version that had been signed in November 2012. The directive is the central US policy document governing how the military develops and uses autonomous and semi-autonomous functions in weapons, and the 2023 update was its first major revision in more than a decade.
The directive’s stated purpose is to “minimize the probability and consequences of unintended engagements” by setting policy and assigning responsibilities for autonomy in weapons. Its best-known requirement is that such systems be designed to “allow commanders and operators to exercise appropriate levels of human judgment over the use of force.” The phrase “appropriate levels of human judgment” is deliberate: it is narrower and more flexible than the “meaningful human control” language preferred by many campaigners and humanitarian organizations.
The 2023 version kept the core senior-review process from the 2012 policy, under which certain autonomous and semi-autonomous weapon systems must be approved by top defense officials before development and again before fielding. It also folded in the department’s later work on AI ethics, requiring that autonomous capabilities be consistent with the DoD AI Ethical Principles and the Responsible AI strategy.
Why this matters: Directive 3000.09 is the document most often cited as evidence that the United States already regulates autonomous weapons through national policy rather than a new treaty. For technology firms and observers, it defines what the largest military buyer of AI considers acceptable, and its “appropriate human judgment” standard has become a reference point in the wider international debate over lethal autonomous weapons.