Diplomatic Analysis: Pope Leo XIV’s encyclical challenges the security community to reconcile technological advancement with moral responsibility.
The recent publication of Pope Leo XIV’s encyclical, Magnifica Humanitas, has ignited debate within the security and intelligence communities. While acknowledging the potential benefits of Artificial Intelligence (AI) in enhancing military capabilities, the encyclical delivers a stark critique of the current technological trajectory, particularly concerning the risk of escalating conflict and dehumanising warfare. This analysis examines the core arguments of the encyclical, the competing perspectives on responsible AI development, and the implications for international security, particularly considering the accelerating AI arms race and the context of great power competition. It assesses the necessity of robust guardrails to navigate this complex landscape, a need highlighted by recent moves within the U.S. military toward increased AI integration in targeting.
Historical Context
The ethical considerations surrounding military technology are not new. Throughout history, advancements in weaponry have prompted reflection on the morality of war. The development of gunpowder, and subsequently, the industrialisation of warfare, each generated moral crises. The 20th and 21st centuries have witnessed numerous attempts to codify ethical constraints on armed conflict – from the Geneva Conventions to the Hague Conventions – seeking to mitigate the brutality of war and minimise civilian casualties. However, the dawn of AI presents a qualitatively different challenge. Unlike previous technologies, AI introduces the potential for autonomous decision-making in lethal contexts, eroding traditional lines of human responsibility and raising profound questions about accountability. The current discourse builds upon pre-existing concerns regarding cyber warfare, information warfare, and the erosion of trust in information ecosystems – all amplified by emerging AI capabilities. The Russia-Ukraine war and the ongoing conflict in Gaza have underscored the increasing role of technology in modern warfare and the challenges of operating within ambiguous legal and ethical boundaries.
Key Actors & Positions
Key actors navigating this landscape include nation-states – notably the United States, China, and Russia – each vying for technological supremacy in AI. The United States, while advocating for “responsible AI,” is actively investing in AI-enhanced military capabilities, driven by concerns of falling behind geopolitical rivals. China prioritises AI development as a key national strategy, with fewer publicly articulated ethical constraints. Russia similarly views AI as crucial for modernising its military, and is less concerned with ethical considerations. International organisations like the United Nations and the International Committee of the Red Cross are attempting to formulate norms and frameworks for responsible military AI use. The Catholic Church, through Magnifica Humanitas, presents a moral framework centred on protecting human dignity and rejecting the notion of autonomous weapons systems. Technological companies developing AI technologies are also key players, facing increasing pressure to address the ethical implications of their work. Finally, civil society organisations advocate for stricter regulations and greater transparency in AI development and deployment.
Analysis
Pope Leo XIV’s argument that AI could lower the threshold for conflict and reduce human life to ‘data’ taps into a fundamental anxiety regarding de-personalisation and the escalation of violence. The risk of AI-driven escalation is real. Shorter reaction times, faster decision cycles, and the potential for algorithmic bias could exacerbate existing tensions and increase the likelihood of unintended consequences. The argument for maintaining a “human in the loop” – even for monitoring purposes – is vital, but, as the Pentagon’s revised targeting doctrine demonstrates, the definition of “meaningful human control” is subject to interpretation and potentially erosion. However, a complete cessation of AI development for military purposes, as implicitly suggested by the encyclical, appears unrealistic given the geopolitical realities. The pursuit of AI-enhanced capabilities by adversaries necessitates a response, even if imperfect. The focus, therefore, must shift towards establishing robust, enforceable international norms and legally binding regulations. The current framework of non-binding declarations and aspirational guidelines is insufficient. The potential for AI to enhance precision targeting and reduce collateral damage, as the article notes, should not be dismissed out of hand. But realising this potential requires rigorous testing, transparency, and accountability – qualities currently lacking. The core tension lies in balancing the imperative to protect national security with the ethical obligation to minimise harm and uphold human dignity.
Outlook
The trajectory of military AI development remains highly uncertain. The next 12-24 months will be critical in determining whether international efforts to establish binding regulations gain momentum. The United States’ willingness to champion these efforts, despite its own investments in AI, will be a key factor. The acceleration of AI development by China and Russia continues to present a formidable challenge to establishing effective norms. A pragmatic outlook suggests a mixed approach: continued investment in AI-enhanced capabilities alongside a concerted push for enforceable ethical guidelines. The success of this approach hinges on transparent dialogue, international cooperation, and a willingness to prioritise human safety and dignity over short-term strategic gains. The core of the debate, as highlighted by the Pope’s encyclical, is not whether to utilise AI, but how it is utilised.
Sources:
Albert, Craig Douglas. “A Catholic Security Scholar’s Case for Responsible Military AI.” War on the Rocks, 6 July 2026, [https://warontherocks.com/2026/07/a-catholic-security-scholars-case-for-responsible-military-ai/](https://warontherocks.com/2026/07/a-catholic-security-scholars-case-for-responsible-military-ai/)
Pope Leo XIV. Magnifica Humanitas. Vatican City, 2026.
U.S. Department of Defense Directive 3000.09, “Autonomy in Weapon Systems,” (Washington, D.C.: 2023).
U.S. Department of Defense Instruction 3000.17, “Civilian Harm Mitigation and Response” (Washington, D.C.: 2023).
