Emerging Security Threats and Evolving Defense Strategies… The global security environment is undergoing a profound transformation. Traditional military threats remain important, but they now exist alongside cyberattacks, artificial intelligence, autonomous weapons, disinformation, drone warfare, attacks on critical infrastructure, economic coercion, supply-chain vulnerabilities, and climate-related instability. The result is a security landscape in which the boundary between war and peace is increasingly difficult to define.
Governments are therefore being forced to rethink what “defense” means. National security can no longer depend solely on tanks, aircraft, ships, missiles, and large standing armies. Effective defense increasingly requires resilient digital infrastructure, intelligence-sharing networks, advanced sensors, artificial intelligence, secure supply chains, adaptable military forces, civil preparedness, and international cooperation.
The scale of this transformation is reflected in global defense spending. According to the Stockholm International Peace Research Institute (SIPRI), worldwide military expenditure reached approximately $2.89 trillion in 2025, representing an 11th consecutive year of growth. Spending increased by 2.9% in real terms compared with 2024, while global military expenditure reached 2.5% of world GDP. Europe’s spending rose particularly sharply, increasing by 14% in 2025, while expenditure in Asia and Oceania increased by 8.1%.
Yet more spending alone does not guarantee greater security. The defining challenge of the coming decade will be determining how countries invest in capabilities that can respond to threats that are faster, cheaper, more decentralized, and increasingly technology-driven.
For much of the twentieth century, national defense planning focused on recognizable military adversaries and conventional battlefields. Today, strategic competition can occur simultaneously in physical, digital, economic, informational, and technological domains.
The World Economic Forum’s Global Risks Report 2026 illustrates this shift. Among more than 1,300 surveyed experts, geoeconomic confrontation was identified as the leading global risk for 2026, followed by state-based armed conflict. Misinformation and disinformation ranked second in the two-year outlook, while cyber insecurity ranked sixth. The report also found that adverse outcomes from artificial intelligence rose dramatically in perceived importance, moving from 30th in the two-year outlook to fifth in the ten-year outlook.
This indicates that security threats increasingly overlap. A geopolitical dispute can generate cyberattacks; cyber operations can disrupt financial systems; disinformation can weaken public confidence; and economic sanctions or export controls can become instruments of strategic competition.
Modern defense strategies consequently need to address several interconnected layers:
Cybersecurity has become one of the most consequential components of national defense because modern societies depend on interconnected digital systems. Electricity grids, hospitals, banks, transportation networks, telecommunications systems, government databases, military logistics, and industrial facilities can all become targets.
The World Economic Forum’s Global Cybersecurity Outlook 2026 describes a rapidly changing environment in which artificial intelligence is transforming both offensive and defensive cyber capabilities. Organizations are adopting AI and automation at increasing speed, while governance structures and human expertise are struggling to keep pace. Geopolitical fragmentation is also making international cooperation more difficult.
The strategic danger is not limited to stealing information. A sophisticated cyber campaign could seek to interrupt essential services, manipulate data, compromise military communications, or create uncertainty during a political or military crisis.
The most important lesson from major cyber incidents is that cybersecurity cannot be treated as an isolated information-technology problem. A hospital losing access to digital systems, a port experiencing operational disruption, or a government losing access to communications can create real-world consequences.
Defense strategies are therefore increasingly emphasizing “resilience by design.” Instead of assuming that every attack can be prevented, governments and organizations are planning around the assumption that some systems will eventually be compromised.
The strategic objective is shifting from perfect prevention to rapid detection, containment, recovery, and adaptation.
Artificial intelligence may become one of the most consequential technologies in defense since the introduction of precision-guided weapons and modern computing. AI can process enormous volumes of information, identify patterns, support logistics, improve intelligence analysis, detect cyber threats, and help commanders make decisions more quickly.
However, the same capabilities can be exploited by adversaries. AI can help generate convincing disinformation, automate cyber operations, identify vulnerabilities, accelerate intelligence processing, and support autonomous military systems.
The security dilemma is particularly acute because AI development is occurring across civilian and military ecosystems. Technologies created for commercial applications can potentially be adapted for defense or offensive purposes, making technological competition harder to contain.
The International Committee of the Red Cross has warned that AI in military applications can accelerate the pace and scale of warfare while increasing unpredictability and potentially reducing human control. It identifies three particularly important areas of concern: autonomous weapons, AI-enabled military decision support, and AI-enabled cyber capabilities.
One of the central questions is not whether AI should be used in defense, but where meaningful human judgment must remain mandatory.
AI systems can identify patterns much faster than humans, but speed does not necessarily equal understanding. A system trained on incomplete, biased, outdated, or manipulated data may produce confident but incorrect recommendations. In a military environment, an erroneous recommendation can have irreversible consequences.
The appropriate defense strategy therefore combines machine speed with human accountability. AI should increasingly assist with information processing and decision support while humans retain responsibility for consequential judgments, particularly those involving the use of force.
Autonomous weapon systems represent an especially difficult security challenge. According to the ICRC, such systems can select and engage targets without further human intervention after activation. The organization argues that increasing autonomy raises humanitarian, legal, ethical, and escalation risks.
The concern is not simply technological. It is about accountability. If a weapon makes a targeting decision based on sensor inputs and a generalized target profile, determining who is responsible when the system makes a catastrophic mistake can become difficult.
The ICRC’s current position calls for legally binding international rules that would prohibit unpredictable autonomous weapons and autonomous weapons designed or used to apply force directly against people, while imposing strict restrictions on other autonomous systems.
For military planners, this creates a difficult balance. Autonomy can provide advantages in environments where communications are disrupted or reaction times are extremely short. At the same time, uncontrolled autonomy could accelerate escalation and make conflicts harder for humans to manage.
Future defense strategies will therefore need robust safeguards, including:
One of the clearest examples of technological democratization in warfare is the spread of drones. Uncrewed aerial systems can provide surveillance, targeting, communications, logistics, and strike capabilities at costs that may be dramatically lower than traditional aircraft.
The significance of drones extends beyond their individual capabilities. Large numbers of relatively inexpensive systems can complicate traditional air-defense models. A defender may face a difficult economic calculation when expensive interceptors are used against inexpensive drones.
This has encouraged militaries to explore layered defenses involving electronic warfare, radar, passive sensors, short-range air defense, directed-energy technologies, interceptor drones, and other approaches.
The broader lesson is that defense systems must become economically sustainable as well as technologically sophisticated. A system that can defeat an incoming threat but costs many times more than the threat itself may not be viable during a prolonged conflict.
Modern conflicts are also fought through narratives. Social media platforms, encrypted messaging services, video-sharing networks, and generative AI have transformed the speed at which information can spread.
Disinformation can be used to undermine elections, inflame social divisions, create confusion during emergencies, or weaken confidence in institutions. Deepfake audio and video further complicate the problem because citizens can no longer assume that apparently authentic digital material is genuine.
The World Economic Forum ranked misinformation and disinformation as the second-highest risk over the two-year horizon in its 2026 Global Risks Report.
The defense response cannot simply be censorship. Democratic societies need credible mechanisms for verifying information while protecting legitimate debate and freedom of expression.
Effective strategies include:
The fundamental objective is resilience: citizens should be capable of recognizing uncertainty without automatically accepting the loudest or most emotionally persuasive narrative.
Critical infrastructure is increasingly attractive to hostile actors because its disruption can generate effects far beyond the immediate target. Electricity, water, telecommunications, transportation, satellites, financial networks, ports, and fuel infrastructure are all connected to national security.
This creates a major challenge because much critical infrastructure is owned or operated by private companies. National defense therefore increasingly requires public-private security partnerships.
A resilient infrastructure strategy should focus on redundancy and rapid restoration rather than assuming that every component can be made invulnerable. Governments can encourage operators to diversify suppliers, maintain offline backups, conduct realistic exercises, and develop emergency communications systems.
Satellite systems deserve particular attention. Modern militaries and economies rely heavily on space-based communications, navigation, Earth observation, and timing services. Disruption of these capabilities could affect both military operations and civilian economies.
Globalization created enormous economic efficiencies, but it also created dependencies. Countries may become vulnerable when essential components, energy supplies, advanced chips, rare materials, or critical technologies are concentrated in a small number of locations.
As geopolitical competition intensifies, economic relationships are increasingly viewed through a security lens. Export controls, sanctions, investment restrictions, industrial policy, strategic stockpiles, and supply-chain diversification are becoming part of national security planning.
The World Economic Forum’s 2026 assessment reflects this broader transformation: geoeconomic confrontation was ranked the number-one global risk for 2026, demonstrating that economic competition and security competition are increasingly intertwined.
However, complete economic self-sufficiency is neither realistic nor necessarily desirable. A more practical strategy is “resilient interdependence”: maintaining international trade while reducing dangerous concentrations of dependency in strategically important sectors.
The surge in military expenditure demonstrates how seriously governments are responding to geopolitical uncertainty. SIPRI estimates that global military spending reached $2.887 trillion in 2025, with the United States accounting for about $954 billion, China approximately $336 billion, and Russia around $190 billion. Together, the three countries accounted for roughly 51% of global military expenditure.
Europe has experienced particularly significant increases. European military expenditure rose 14% in 2025 to approximately $864 billion, while the region’s military burden increased to 3.2% of GDP.
But the composition of defense spending matters. Buying more traditional platforms without addressing cyber vulnerabilities, drone threats, logistics, electronic warfare, space resilience, and ammunition production may leave armed forces poorly prepared for the conflicts they are actually likely to face.
Modernization should therefore emphasize a balanced portfolio:
NATO’s evolving approach illustrates how major alliances are adapting. In June 2025, NATO defense ministers endorsed a new Science and Technology Strategy designed to preserve the alliance’s technological edge and strengthen resilience. The strategy emphasizes investment in areas including AI, quantum technologies, biotechnology, and STEM education. It also stresses research security, coordination, and the integration of science and technology across NATO’s core tasks.
The significance of this approach lies in its breadth. Technology is no longer viewed simply as equipment that militaries purchase. It is becoming part of the underlying architecture of defense—from scientific research and industrial capacity to cybersecurity, interoperability, and education.
This approach also highlights a central lesson for other countries: technological advantage cannot be sustained without a strong ecosystem of universities, private companies, skilled workers, secure infrastructure, and international partnerships.
Security planning must also account for climate-related pressures. Extreme heat, drought, flooding, water scarcity, food insecurity, and natural disasters can intensify competition over resources and place additional pressure on governments and militaries.
Climate change does not automatically cause armed conflict, but it can act as a threat multiplier. States facing weak institutions, economic instability, demographic pressure, or existing political tensions may be less able to absorb environmental shocks.
Defense organizations are consequently expanding their understanding of resilience to include disaster response, infrastructure adaptation, humanitarian assistance, and climate-related operational planning.
The most effective defense strategies of the future are unlikely to be based on a single technology or weapon system. They will instead resemble interconnected ecosystems capable of adapting quickly.
Several principles are likely to shape defense planning through the 2030s:
Technology often advances faster than international regulation. That creates a dangerous gap between what states and non-state actors can do and what existing rules clearly address.
The challenge is particularly significant for autonomous weapons and military AI. The ICRC has emphasized that international humanitarian law already applies to new technologies of warfare, but it has also called for additional legally binding rules to address specific risks associated with autonomous systems.
International rules cannot eliminate strategic competition, but they can reduce uncertainty. Clear standards can establish boundaries around unacceptable weapons, clarify responsibility, encourage safer design, and create mechanisms for confidence-building.
The same principle applies to cyberspace. Countries benefit from agreeing on norms that discourage attacks against certain civilian systems and improve cooperation when malicious cyber activity crosses borders.
There is no single universal threat. Cyber insecurity, geopolitical conflict, misinformation, AI-related risks, critical-infrastructure attacks, and autonomous weapons are interconnected. Their combined impact may be more significant than any one threat in isolation.
AI could make some defensive operations faster and more accurate, but it can also accelerate attacks, increase the scale of cyber operations, amplify misinformation, and reduce human control over military decisions. The outcome will depend heavily on safeguards, human oversight, testing, and international rules.
Drones can provide surveillance and strike capabilities at relatively low cost and can be deployed in large numbers. This challenges traditional defense models and encourages investment in layered air defense, electronic warfare, counter-drone technologies, and inexpensive interceptors.
No. Defense spending is important, but its effectiveness depends on how resources are allocated. Cybersecurity, logistics, training, resilience, intelligence, industrial capacity, and emerging technologies can be just as important as conventional weapons platforms.
Strong institutions, rapid crisis communication, media literacy, independent verification, digital-content authentication, and public awareness can reduce vulnerability. The goal should be resilient citizens and trusted information systems rather than simply attempting to suppress unwanted information.
The global security environment is moving from an era dominated by conventional military power toward one defined by interconnected risks. Armies still matter, but so do servers, satellites, semiconductor factories, social-media networks, power grids, supply chains, algorithms, and public trust.
The rise of cyber threats, AI, autonomous systems, drones, disinformation, economic coercion, and infrastructure vulnerabilities means that defense can no longer be confined to ministries of defense or military organizations. National security has become a whole-of-society responsibility involving governments, businesses, technology companies, universities, international organizations, and citizens.
The central lesson is that resilience is becoming as important as deterrence. States must be able not only to prevent attacks but also to absorb disruption, recover quickly, learn from failure, and adapt faster than their adversaries.
At the same time, technological competition must be accompanied by responsible governance. The more powerful autonomous systems and AI become, the more important it is to preserve human accountability and establish international boundaries around their use. The objective should not be to prevent technological progress, but to ensure that innovation strengthens security without creating uncontrollable new dangers.
Ultimately, the countries best positioned for the emerging security environment will not necessarily be those possessing the largest arsenals. They will be those capable of integrating technology, intelligence, economic strength, resilient infrastructure, skilled people, credible institutions, and international partnerships into a flexible defense system.
The future of security will therefore belong to those who can adapt. In a world where threats evolve at digital speed and geopolitical competition increasingly crosses every boundary, preparedness is no longer a periodic exercise. It is a continuous strategic process.
