What is autonomy in weapons systems?
Autonomy in weapons systems has existed, to a certain degree, for decades. However, with advances in artificial intelligence, specifically in the area of machine learning, there is a trend towards increasing autonomy in various functions of weapons systems, including in critical functions such as target selection and the application of force.
Systems that use machine analysis of information acquired from sensors to automatically select and engage targets, such that a human operator does not determine specifically where, when or against what force is applied, are of particular concern. In these systems, upon activation, there is a period of time where the weapons system can apply force to a target without additional human approval.
The specific object to be attacked, and the exact time and place of the attack, are determined by sensor processing, instead of an immediate human command.
Why is increasing autonomy in weapons systems something to be concerned about?
The automation of certain functions, including target selection and engaging of targets, are critical functions which should remain within meaningful human control.
Systems that function in this way present moral, ethical, humanitarian, operational and legal challenges, and threaten international peace, security and stability. Autonomy in weapons systems diminishes the control of the human operator and undermines accountability and responsibility in conflict.
They raise serious concerns over compliance with international human rights law and the international humanitarian law principles of distinction, proportionality, precaution and the prohibition of indiscriminate attacks, as documented by the International Committee of the Red Cross.
A selection of relevant reports are available below.
Relevant reports

Autonomous weapons and digital dehumanisation (2022)
| Automated Decision Research
This short explainer paper discusses autonomous weapons in the context of digital dehumanisation.

Background Briefing: Review of the 2023 US Policy on Autonomy in Weapons Systems (2023)
| Human Rights Watch

Completely outside human control? (2023)
| Article 36

Autonomous weapons as a solution to war crimes? (2022)
| Article 36
A common claim about autonomous weapons in the media, and amongst pundits, is that autonomous systems would not suffer human emotions and would not therefore undertake the atrocities that are driven by these emotions in conflict. A new discussion paper [...]

Armes autonomes et déshumanisation numérique (2022)
| Automated Decision Research
La déshumanisation numérique est le processus par lequel les humains sont réduits à des données, qui sont ensuite utilisées pour la prise de décisions et/ou d'actions qui affectent négativement nos vies. Ce procédé dépossède les gens de leur dignité, dévalorise [...]

Armas autónomas y deshumanización digital (2022)
| Automated Decision Research
La deshumanización digital es el proceso por el cual los humanos quedan reducidos a datos, los cuales, después se utilizan para tomar decisiones y/o emprender medidas que afectan negativamente nuestras vidas. Este proceso despoja a las personas de su dignidad, [...]

Foundations of the GDPR: Principles relevant to discussions on autonomous weapons (2022)
| Article 36
During the development of the General Data Protection Regulation (GDPR), European legislators recognized the need to protect individuals from harms resulting from automated decision-making. The concerns which motivated legislators to implement new regulations for automated decision-making in the data protection [...]

Artificial intelligence and automated decisions: shared challenges in the civil and military spheres (2022)
| Automated Decision Research
This paper provides an initial sketch of responses to AI and automated decision-making in wider society, while contextualising these responses in relation to autonomy in weapons systems.

Robots tueurs: bientôt opérationnels? (2021)
| Groupe de recherche et d’information sur la paix et la sécurité (GRIP)
Cette note d'analyse examine les informations fournies par une demi-douzaine de producteurs d’armes autonomes, en particulier des munitions rôdeuses. C’est en effet parmi les munitions rôdeuses que nous avons observé certaines des armes « les plus autonomes », une d’entre [...]

Increasing autonomy in weapons systems: 10 examples that can inform thinking (2021)
| Automated Decision Research
| PAX
This paper highlights ten weapons systems with features that might be informative to considerations around autonomy in weapons systems. It seeks to showcase the diversity of types of weapon systems that are used in a variety of domains, as well [...]