847: DETERRENCE IN THE AUTONOMOUS WARFARE SCENARIO

 

Article published in the Sep 26 edition of “News Analytics” magazine

 

The character of warfare evolves alongside technological innovation. Today, another transformative revolution is reshaping global security.  The integration of artificial intelligence (AI), autonomous weapons systems, and human-machine teaming into military operations is underway.

Deterrence has traditionally depended on a human adversary believing that the costs of aggression will outweigh its expected benefits. Nuclear weapons made this logic especially powerful by creating the prospect of unacceptable retaliation.

Autonomous warfare, however, is altering the speed, visibility and psychology of military competition. Artificial intelligence-enabled systems can detect, classify, track and engage targets with limited human intervention. In contrast, autonomous drones, loitering munitions, cyber tools, underwater vehicles and defensive systems may operate across several domains simultaneously. The central question is whether autonomous systems will replace conventional or nuclear deterrence or alter its dynamics.

 

The Transformative Effects on Deterrence

At the core of this transformation is the integration of AI across the full spectrum of military functions, including intelligence, surveillance, and reconnaissance (ISR), targeting, command and control, logistics, and, increasingly, the application of force. Autonomous platforms (ranging from loitering munitions and drone swarms to AI-enabled decision-support systems) operate with varying degrees of independence once activated. Human-machine teaming seeks to combine the strengths of both.

Autonomous systems are particularly suited to denial because they can support persistent sensing, distributed defence, and rapid disruption. Unmanned aerial vehicles can monitor approaches to military installations; autonomous underwater systems can observe maritime activity; ground robots can support border surveillance; and AI-enabled command systems can fuse information from multiple sensors. A networked force may complicate an adversary’s effort to achieve surprise, suppress defences or destroy high-value targets.

Autonomy can enhance capability by allowing military systems to process enormous quantities of data and act faster than human operators. An AI-enabled surveillance network may identify changes in an adversary’s deployment patterns before traditional intelligence systems do. Autonomous platforms can then maintain continuous patrols, coordinate with one another and respond to selected threats without waiting for detailed instructions. Such capabilities may strengthen deterrence by denial.

The importance of denial will increase as military forces become more dispersed. Instead of protecting a small number of vulnerable platforms, states may deploy large numbers of mobile, concealed and networked systems. An adversary would then face a difficult targeting problem: destroying some autonomous platforms would not necessarily turn off the entire force. This resilience can reduce the attractiveness of a first strike.

Autonomy can influence credibility. A state with resilient, dispersed, and relatively inexpensive autonomous systems may be able to respond to aggression even after suffering damage to its command centres, air bases, or naval facilities. Swarms and unmanned systems can generate operational effects without exposing large numbers of personnel to danger. This may make retaliation more politically acceptable and therefore more credible.

Autonomy can also impose operational costs. Defensive systems may use algorithms to detect incoming missiles, drones or aircraft and recommend or initiate responses. If these systems are reliable and their employment conditions are clearly defined, they can reduce the prospect that an adversary will achieve a quick victory. The strategic message becomes: aggression will encounter a persistent, adaptive and difficult-to-suppress defence.

 

Escalation Dynamics

The most serious challenge is compressed decision time. Autonomous systems can identify and respond to threats faster than human institutions can verify information, consult political leaders or establish whether an incident was deliberate. In a crisis, this may generate a “use-or-lose” mentality. Commanders may fear that delaying action will allow an adversary’s autonomous systems to destroy their own sensors, communications or retaliatory forces.

Machine-speed operations can therefore create pressure for pre-delegation. Political and military leaders may authorise automated responses in advance because human approval would be too slow. Yet pre-delegation carries significant risks. An algorithm may misinterpret a civilian aircraft, a training exercise or a cyber intrusion as an attack. A technical malfunction could trigger a chain of responses that neither side intended.

Autonomous warfare also creates the possibility of machine-to-machine interaction. One state’s defensive algorithm may classify the activation of another state’s autonomous system as hostile. The second state may then respond automatically, producing reciprocal escalation. Unlike human decision-makers, algorithms do not possess political intuition, historical memory or an inherent preference for restraint. They optimise according to programmed objectives and available data. If the data are incomplete or manipulated, the resulting decision may be technically rational but strategically disastrous.

 

Strategic Stability

Autonomous warfare will have its most consequential impact on strategic stability when it interacts with nuclear forces. AI-enabled systems may improve early warning, intelligence analysis and the protection of nuclear assets. They could help identify suspicious activity and strengthen command-and-control resilience. In this respect, autonomy may reduce uncertainty and support more informed decisions.

The opposite is also possible. AI-enabled surveillance and autonomous strike systems could threaten mobile missiles, submarines, command centres and communications networks. If one state believes that its nuclear deterrent is becoming vulnerable, it may adopt more aggressive readiness postures or delegate greater authority to military commanders. The combination of improved detection, persistent tracking and rapid attack could generate fears of a disarming first strike.

This danger is not limited to actual technical capability. Perception also does matter. A state may respond to what it believes an adversary can do, even if the adversary’s systems are not as effective as assumed. Strategic competition could consequently become unstable through exaggerated assessments of AI-enabled counterforce capabilities. The combination of advanced intelligence, strike systems and missile defence may challenge the traditional assumption that retaliation remains assured after a first strike.

Autonomous systems may also blur the boundary between conventional and nuclear operations. An attack on dual-use command-and-control infrastructure by conventional autonomous weapons could be interpreted as preparation for a nuclear attack. If a state cannot distinguish between an anti-conventional operation and an anti-nuclear operation, it may escalate rapidly. Maintaining clear separation between nuclear and conventional assets, preserving human decision authority and establishing crisis communication channels will therefore become increasingly important.

 

Implications for India and Regional Security

For India, autonomous warfare is directly relevant to a security environment characterised by contested borders, maritime competition, terrorism, cyber threats, and the possibility of simultaneous pressure from multiple directions. Autonomous systems can enhance surveillance along difficult terrain, improve maritime domain awareness and support the protection of critical infrastructure. They can also strengthen deterrence by denial by making surprise incursions, drone attacks and limited aggression more difficult to execute successfully.

However, technology alone cannot provide deterrence. India would require an integrated architecture combining sensors, secure communications, electronic warfare, cyber resilience, air defence, space-based support and trained human operators. Autonomous platforms must remain connected to a wider command-and-control system that can function even when communications are degraded, or networks are attacked.

 

Concluding Thoughts

The transition to algorithm-assisted autonomous warfare will not change the basic concept of strategic deterrence. It will mandate a more controlled version of it. One that accounts for machine-speed decision cycles and distributed, ambiguous chains of responsibility. It will also have to cater for an adversary whose calculations are also based on software architectures. Autonomy will create an additional layer of deterrence, one based on persistent surveillance, rapid response, distributed force structures, denial of objectives and the ability to impose costs at machine speed.

As autonomous capabilities continue to grow, policymakers will have the important task of adapting and finding balance during this transition. In autonomous warfare, deterrence will depend not just on cutting-edge technologies but also on ensuring these systems operate within clear, transparent guidelines, robust command structures, well-rounded legal frameworks, and internationally accepted norms. The goal isn’t to slow technological progress, but to ensure that humans, who are ultimately responsible for warfare, still have the power to choose peace.

 

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Disclaimer:

Information and data included in the blog are for educational & non-commercial purposes only and have been carefully adapted, excerpted, or edited from reliable and accurate sources. All copyrighted material belongs to the respective owners and is provided only for wider dissemination.

 

 

References: –

  1. Institute for Defence Studies and Analyses. (2019). Artificial intelligence and national security: Indian perspectives. Manohar Parrikar Institute for Defence Studies and Analyses.
  1. Rajaraman, V. (2014). Robot soldiers: Artificial intelligence and the future of warfare. Resonance, 19(11), 1037–1048.
  1. Horowitz, M. C. (2016). The ethics & morality of robotic warfare: Assessing the debate over autonomous weapons. Political Science Quarterly, 131(2), 331–351.
  1. Boulanin, V., Saalman, L., Topychkanov, P., Su, F., & Peldán Carlsson, M. (2020). Artificial intelligence, strategic stability and nuclear risk. Stockholm International Peace Research Institute.
  1. Su, F., Wan, W., Saalman, L., & Chernavskikh, V. (2025). Pragmatic approaches to governance at the artificial intelligence–nuclear nexus. Stockholm International Peace Research Institute.
  1. Boulanin, V., Saalman, L., Topychkanov, P., Su, F., & Peldán Carlsson, M. (2020). Artificial intelligence, strategic stability and nuclear risk. Stockholm International Peace Research Institute.
  1. Johnson, J. (2020). Artificial intelligence, drone swarming and deterrence. Journal of Strategic Studies, 43(5), 1–24.
  2. Horowitz, M. C. (2019). When speed kills: Lethal autonomous weapons, deterrence, and stability. Journal of Strategic Studies, 42(5), 764–788.

629: LEONIDAS BY EPIRUS: STAR TREK STYLE SHIELD OF DIRECTED ENERGY WEAPON

 

My Article published on the EurasianTimes Website on 28 Mar 25.

 

The most recent and significant news, announced in March 2025, is that Epirus Inc., a defence technology start-up based in Torrance, California, has unveiled the Leonidas system, a high-power microwave (HPM) weapon designed to neutralise unmanned aerial vehicle (UAV) swarms. This innovative system emits electromagnetic pulses to disable drones individually or across a broad area, offering a scalable solution to counter drone threats. The Leonidas system has been likened to a “Star Trek-style” shield due to its ability to disable or destroy drones within seconds. Beyond its counter-drone capabilities, the Leonidas system’s versatility allows it to disable electronics in ground vehicles and sea vessels, demonstrating its potential across various defences.

In the rapidly evolving landscape of modern warfare, unmanned aerial systems (UAS) have emerged as a significant and multifaceted threat. Due to their high operational costs and limited ammunition capacity, traditional defence mechanisms, such as missiles or anti-aircraft guns, struggle to keep pace with these agile, numerous, and often low-cost adversaries. The Leonidas system addresses these challenges through directed energy technology, allowing for rapid, reusable, and cost-effective simultaneous engagement of multiple threats.

Named after the legendary Spartan king who famously stood against overwhelming odds at Thermopylae, the Leonidas system embodies a bold and forward-thinking approach to defence. Leveraging cutting-edge HPM technology, it offers a non-kinetic alternative to conventional systems, addressing one of the most pressing challenges of the 21st century.

 

High-Power Microwave Technology. HPM systems generate electromagnetic waves ranging from 300 MHz to 300 GHz. Unlike the microwaves used in household ovens to heat food by exciting water molecules, HPM delivers intense bursts of energy capable of inducing currents in electronic circuits. When directed at a target, these microwaves can disrupt or permanently damage sensitive components, rendering devices like drones inoperable. HPM’s ability to affect a broader area rather than a single pinpoint sets it apart from other directed energy technologies, such as lasers. This makes it particularly effective against multiple targets or swarms, a critical advantage in scenarios where dozens or hundreds of drones might be deployed simultaneously. Historically, HPM systems relied on vacuum tube technology, which was bulky, fragile, and maintenance-intensive. However, recent advancements in solid-state electronics have revolutionised the field. Solid-state HPM systems, like the one powering Leonidas, use semiconductor devices to generate microwaves, offering greater durability, efficiency, and compactness, attributes that make the technology viable for real-world deployment.

 

The Leonidas System.

The Leonidas system is a pinnacle of Epirus’s expertise in solid-state HPM technology. While proprietary details remain closely guarded, the key aspects of its design and functionality can be based on the general principles of HPM and publicly available information.

 At its core, the system likely features an array of solid-state amplifiers that generate and amplify microwave signals. These signals are then emitted through a steerable antenna, allowing operators to direct the HPM beam toward specific targets or areas. The power output of the Leonidas system would be a critical factor in its effectiveness. Although exact specifications are not disclosed, HPM systems typically produce peak powers ranging from hundreds of kilowatts to several megawatts. This energy is sufficient to disable the electronics of drones within a specific range, which depends on factors such as power levels, frequency, and atmospheric conditions. Unlike lasers, which maintain a tight beam over long distances, HPM waves experience divergence and can be attenuated by moisture or particles in the air, potentially limiting their range. However, this constraint is less significant for counter-drone applications where threats are often within a few kilometers.

Advanced targeting and control systems are integral to the Leonidas platform. These likely include radar or optical sensors to detect and track drones, paired with sophisticated software that prioritises targets and adjusts the beam’s intensity and direction. The result is a highly responsive system capable of engaging fast-moving threats with near-instantaneous effect, as HPM travels at the speed of light. These systems also enable the Leonidas to distinguish between friendly and hostile drones, reducing the risk of friendly fire and enhancing its effectiveness in complex operational environments.

Epirus has developed fixed and mobile versions of the Leonidas system, enhancing its versatility. Stationary installations might protect critical infrastructure, while vehicle-mounted units could support troops in the field, offering a flexible defence against dynamic threats.

 

Applications

The primary mission of the Leonidas system is to counter drone threats, a capability that addresses a growing concern in military and civilian contexts. The Leonidas system excels in such scenarios, using its wide-area HPM effects to disable multiple drones with a single burst. This makes it an ideal solution for protecting military installations, convoys, or naval vessels from both individual and coordinated drone attacks.

Beyond counter-drone operations, the Leonidas system holds promise for electronic warfare. Targeting enemy communication systems, radars, or other electronic equipment could degrade an adversary’s situational awareness or operational capabilities without firing a shot. Additionally, the technology might be adapted to disable vehicles or machinery reliant on electronic controls, though this could require higher power levels or closer proximity to the target.

Epirus has also hinted at broader applications, such as non-lethal uses for perimeter security or crowd control. In these scenarios, HPM could deter intrusions or disable unauthorised devices without causing permanent harm, offering a versatile tool for law enforcement or homeland security.

 

Advantages. 

The Leonidas system offers several compelling advantages over conventional kinetic defence systems, making it a game-changer in the fight against emerging threats.

    • Cost-Effectiveness. Engaging a target with HPM requires only electrical energy, a fraction of the cost of expending missiles or ammunition. This is particularly advantageous against low-cost drones, where using expensive munitions is economically unsustainable.
    • Precision and Control. Operators can tune the system to affect specific areas or targets, minimising collateral damage. Adjusting power output in real time allows it to respond to varying threat levels with tailored precision.
    • Scalability. From small consumer drones to larger military UAS, the Leonidas system can adapt its energy output to neutralise a wide range of targets, offering flexibility across different operational contexts.
    • Unlimited Magazine. Unlike guns or missile launchers with finite ammunition, the Leonidas system can operate continuously as long as it has power, making it ideal for prolonged engagements or swarm attacks.

 

Challenges

Despite its promise, the Leonidas system faces several technical and operational challenges that must be addressed for widespread adoption:-

    • Power Requirements. Generating high-power microwaves demands significant electrical energy. For mobile deployments, this necessitates robust power sources, such as large batteries or generators that could limit the system’s portability or require frequent recharging.
    • Range and Environmental Limitations. HPM’s effectiveness decreases with distance due to beam divergence and atmospheric absorption. Adverse weather conditions, such as rain or fog, could further reduce performance, potentially requiring multiple units for comprehensive coverage.
    • Integration with Existing Systems. Incorporating a novel technology like HPM into established defence frameworks involves significant hurdles. This includes adapting hardware, training personnel, and developing tactics to maximise its utility alongside traditional systems.
    • Unintended Disruptions. HPM’s broad-area effects could inadvertently interfere with friendly electronics, communication networks, or civilian infrastructure if not carefully managed. Robust targeting and safety protocols are essential to mitigate this risk.
    • Strategic Considerations. While primarily defensive, the ability to disable electronics at a distance raises questions about potential offensive applications or escalation in conflicts. International laws and treaties governing directed energy weapons may need to evolve to address these concerns and ensure responsible use.

 

Impact and Future Prospects

Epirus has successfully tested the Leonidas system, showcasing its ability to neutralise drone swarms with precision and speed. These demonstrations have attracted global attention from military and defence organisations, underscoring the system’s potential to fill a critical gap in countermeasures. Partnerships with defence contractors or government agencies signal growing confidence in HPM technology and its readiness for operational deployment.

Looking to the future, Epirus may enhance the Leonidas system with more significant power outputs to tackle more prominent or more resilient targets. Integration with complementary technologies, such as lasers, could create a multi-layered defence system, combining HPM’s wide-area effects with a laser’s pinpoint accuracy. Advances in artificial intelligence and machine learning could also enable autonomous operation, allowing the system to detect, prioritise, and engage threats in complex environments with minimal human intervention.

The broader implications of the Leonidas system extend beyond immediate defence needs. As directed-energy weapons gain traction, they could influence global military strategies, potentially sparking an arms race or prompting new regulatory frameworks. For now, its focus on countering drones positions it as a vital tool in an increasingly drone-dominated world.

 

Global DEW Projects

Directed energy weapons (DEWs) are advanced technologies that use focused energy, such as lasers or microwaves, to disable or destroy targets without physical projectiles. Numerous countries are researching and developing these weapons, each with unique projects and strategic goals.

United States. The US is a leader in DEW development. Besides Leonidas, the Department of Defence (DOD) and agencies like DARPA, the Air Force Research Laboratory, and the Naval Research Laboratory are researching DEWs to counter ballistic missiles and hypersonic cruise missiles. Notable projects include the High-Energy Laser Scaling Initiative (HELSI) and systems like HELIOS, with demonstrations successfully shooting down drones.

China. China is making rapid strides in DEW development, with a focus on high-energy lasers and microwave systems. State media and manufacturers have released images of handheld and vehicle-mounted laser systems, including the LW-30, a 30kW road-mobile high-energy laser (HEL) designed for unmanned aerial systems (UAS) and precision-guided weapons. Their efforts extend to counter space applications, with ground-based DEWs potentially targeting satellites, as highlighted in analyses.

Russia. Russia has been developing DEWs for decades, with the Peresvet laser weapon system entering experimental combat duty in 2018 and claimed operational use during the 2022 invasion of Ukraine. A more advanced version, “Zadira,” can incinerate targets up to three miles away within five seconds. Russia is also working on EMP cannons and microwave guns for anti-drone applications.

United Kingdom. The UK’s Ministry of Defence (MOD) is investing heavily in DEWs, with projects like DragonFire, a laser-directed energy weapon (LDEW) that achieved its first high-power firing against aerial targets in January 2024 at the Hebrides Range.  DragonFire, with a range classified but capable of hitting a £1 coin from a kilometer away, is expected to be deployable by 2027. Additionally, the Radio Frequency Directed Energy Weapon (RFDEW) is nearing service by 2026, focusing on countering unmanned systems.

France and Germany. France and Germany are key players in European DEW development, often through multinational collaborations. France is involved in projects like the TALOS-TWO, involving 21 partners across eight EU nations. Germany is focusing on integrating DEWs into defence platforms. These efforts aim for operational deployment by 2030, emphasising cost-effective counter-drone and missile defence systems.

India. India’s Defence Research and Development Organisation (DRDO) is actively pursuing DEWs, with projects like the Directionally Unrestricted Ray-Gun Array (DURGA II), a 100-kilowatt lightweight DEW at the concept stage, set for integration with land, sea, and air platforms. Other initiatives include the KALI particle accelerator and a 1KW laser weapon for counter-IED operations, with plans for 25-kW and 100-kW systems.

Israel. Israel is advancing the Iron Beam laser-based DEW, designed to complement its Iron Dome system. A contract signed in October 2024 for operational service within a year reflects its cost-effectiveness. The US has allocated $1.2 billion for Iron Beam procurement.

Iran and Turkey. They claim DEWs in active service, adding controversy to global assessments. Iran has announced developments in laser air defence systems, while Turkey claims the ALKA DEW was used in combat in Libya in 2019. However, specifics and verification are scarce, with claims often met with scepticism due to limited transparency.

South Korea, Japan, and Australia. South Korea and Japan have advanced technological capabilities, with South Korea developing laser-based systems for counter-drone applications, though less prominently than significant powers. Japan focuses more on nuclear and space technologies, with limited public DEW projects. Australia is investing in DEW technology, particularly for countering drones, with a $13 million deal with QinetiQ for a prototype defensive laser.

 

Conclusion

The Leonidas system by Epirus marks a transformative advancement in modern defence. It harnesses high-power microwave technology to address the escalating threat of drones and electronic-based hazards. Its non-kinetic approach offers a cost-effective, precise, and scalable solution that outperforms traditional systems in key areas, from countering swarms to enabling electronic warfare. While challenges such as power demands, environmental constraints, and integration remain, the system’s successful demonstrations and growing adoption signal its readiness to make a lasting impact.

The future of Directed Energy Weapons (DEWs) is promising, with advancements in laser, microwave, and particle beam technologies enhancing their effectiveness. These weapons offer rapid engagement, precision targeting, and cost efficiency, making them invaluable for missile defence, drone neutralisation, and electronic warfare. However, hurdles such as energy storage, environmental limitations, and legal-ethical concerns must be overcome. As nations invest in DEW research, their role in modern warfare will expand, shaping the next generation of defence capabilities.

 

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Disclaimer:

Information and data included in the blog are for educational & non-commercial purposes only and have been carefully adapted, excerpted, or edited from reliable and accurate sources. All copyrighted material belongs to respective owners and is provided only for wider dissemination.

 

 

Link to the article on the website:-

One Shot, 100 Kills! U.S. Unleashes “Revolutionary” HPM Weapon That Can ‘Fry’ Hostile UAVs Within Seconds

 

References:-

  1. Epirus Inc. “Leonidas High-Power Microwave: Directed Energy for Counter-Unmanned Aerial Systems (cUAS).” Epirus Official Website. ​
  1. DefenceScoop. “Marines to Get New Drone-Killing Microwave Weapon Designed for Expeditionary Operations.” DefenceScoop, September 23, 2024. ​
  1. Axios. “Drone-Frying Defence Firm Epirus Raises $250 Million.” Axios, March 5, 2025. ​
  1. Reuters. “Defence Tech Startup Epirus Secures $250 Million to Make Anti-Drone Weapons.” Reuters, March 5, 2025. ​
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  1. Unmanned Airspace. “Epirus to Deliver Leonidas Expeditionary Air Defence System to US Navy.” Unmanned Airspace, September 2024. ​
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  1. “How Lasers and Microwaves Are Redefining the Battlefield.” Defense News, August 2024.
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