In our last two articles for The Cipher Brief, Sami Omari and I explained why modern limited wars are so challenging for democracies.

We argued that military superiority is necessary but not sufficient for strategic victory: Afghanistan and Iraq showed that battlefield success does not guarantee lasting political outcomes, and Iran may yet prove the same point.

We also examined why democracies struggle to translate tactical success into strategic achievement: fragmented institutions, electoral cycles, public opinion and media scrutiny complicate the political resolve required for prolonged wars of choice.

The challenge becomes greater when democracies fight as coalitions.

Alliances combine military power, share costs and draw on capabilities few states could sustain independently.

But military integration does not produce political unity.

Each member remains accountable to its own electorate, parliament and national interests. A coalition may therefore be highly integrated on the battlefield while remaining politically and strategically decentralised.

In prolonged limited wars, military interoperability is not enough if allies cannot sustain the political will, industrial capacity and common strategic purpose required to endure.

II. Why Democracies Fight in Coalitions

The nuclear age made direct great-power war prohibitively dangerous, shifting competition towards limited wars, insurgencies and proxy conflicts.

Western militaries increasingly moved towards smaller professional forces equipped with more advanced weapons, shaped by technological progress and new strategic realities.

After 1991, the Gulf War and subsequent operations against weaker adversaries appeared to vindicate the effectiveness of Western expeditionary forces.

But smaller professional militaries and increasingly expensive weapons also made allies progressively dependent upon one another. Coalitions allowed democracies to aggregate military power, intelligence, logistics and specialised capabilities without each maintaining the forces and industrial capacity required for large-scale national mobilisation.

For thirty years, that system seemed to work.

Russia’s war against Ukraine has exposed these vulnerabilities over several years; the US-Israeli war with Iran is now testing many of the same assumptions.

Both demonstrate that limited wars can become contests of manpower, industrial capacity and political will.

Of these pressures, political endurance is perhaps the most difficult for democracies to sustain.

III. The Political Endurance Problem

For democracies, fighting a long, limited war depends as much on political legitimacy at home as on military capability.

In wars of choice, where national survival is not at stake, governments must continually justify why the costs of war remain necessary.

Initial public support may create space for intervention, but it erodes as casualties rise, costs accumulate, and the prospect of a clear strategic outcome grows uncertain.

Casualties alone do not determine support.

Democratic societies have accepted heavy losses when citizens believed a war was legitimate, necessary and winnable.

The deeper problem emerges when the link between sacrifice and strategic purpose becomes unclear. As confidence in success fades, losses that once seemed tolerable turn politically damaging. Elections, parliamentary opposition, media scrutiny and changes of government then allow declining public confidence to reshape national strategy. Afghanistan illustrated this over two decades.

Western military superiority was never in doubt, but political will steadily weakened. The longer the war continued without a convincing political end state, the harder it became for democratic leaders to explain what more time, money and lives would achieve.

Authoritarian states face similar pressures but, without competitive elections and independent media, can better insulate strategic decisions from public opinion.

Against democratic opponents, this creates a critical asymmetry: a weaker adversary may not need to win militarily, only survive long enough for democratic political will to erode.

IV. The Industrial Endurance Problem

Political endurance is only one side of the problem. The other is material.

Since the Cold War, Western militaries have increasingly relied on technology instead of mass.

Smaller professional forces employ sophisticated aircraft, ships, missiles and networked systems aimed at achieving decisive results while minimising casualties. But each generation of weapons is more expensive and complex, production runs shrink, and replacing battlefield losses becomes harder as war drags on.

The United States can absorb these pressures better than smaller allies because of its defence budget, technological base and industrial scale.

Even so, American forces became smaller, while defence-industry consolidation reduced the number of manufacturers capable of producing specialised weapons. For smaller allies, limited budgets forced difficult choices between personnel, platforms and munitions, while dependence on American weapons, software, supply chains and sustainment deepened.

Quick wars against weaker opponents long obscured these problems.

Ukraine has brought them sharply to the surface, while the Iran conflict is testing them anew. Advanced weapons can be consumed faster than peacetime factories replace them, while cheap drones and missiles allow weaker states to impose continuing costs on advanced rivals.

This creates an uncomfortable paradox.

Military interoperability strengthens coalitions on the battlefield but also creates industrial dependencies that are difficult to escape. In long, limited wars, technological superiority matters only as long as the coalition can afford, produce and replace what it consumes.

V. A Coalition of Decentralised Systems

Coalitions do not solve the political endurance problem; if anything, they make it worse.

Integrating militaries does not erase national sovereignty. Allied forces can share command structures, intelligence and interoperable systems, but each government still answers to its own voters, parliament and interests.

Afghanistan made that painfully obvious. NATO operated under one mission on paper, but contributing states imposed their own caveats and restrictions on where and how their troops could operate.

Those caveats were not bureaucratic quirks; they reflected different domestic political pressures and appetites for risk. They made burden-sharing and coalition cohesion harder than the unified-command narrative suggested.

Of the contemporary great powers, the US above all can supply the backbone of an international military coalition: intelligence, logistics and advanced capabilities.

What it cannot do is fuse the sovereign political systems behind every other contributor.

Middle and smaller powers like Australia and Canada still matter because they bring niche capabilities, diplomatic weight and political legitimacy while operating inside their own domestic constraints.

Coalitions may fight as one integrated military network, but the statecraft holding that network together stays stubbornly decentralised.

VI. From Military Interoperability to Strategic Interoperability

This gap between integrated military networks and decentralised statecraft is the central weakness of contemporary coalition warfare.

Modern limited wars therefore require more than military interoperability. They require strategic interoperability.

Sovereign allies must be able to coordinate military, political, economic and industrial power to pursue and sustain a common strategic objective.

This does not mean supranational government or surrendered sovereignty, but unity of strategic effect even when national policies differ.

In practice, this could involve standing allied mechanisms that integrate political planning, defence production, economic measures, strategic communications and military operations around an agreed political end state before a crisis becomes a prolonged war.

Conclusion

Across these three articles, we have argued that military superiority alone cannot guarantee strategic victory; that democratic institutions often struggle to turn battlefield success into sustainable political outcomes; and that these difficulties multiply when democracies fight as coalitions.

The endurance of democratic alliances will depend on more than their ability to fight together.

Sovereign governments must sustain public support, share political and military burdens, and remain committed to common strategic purpose when conflicts become longer and more costly than expected.

Democratic accountability need not become a strategic weakness, but preserving sovereignty while sustaining collective action will require greater political cohesion.

The ultimate obstacle is not technology or concepts, but political will: overcoming domestic divisions and institutional rivalries to sustain common purpose.

As the era of AI unfolds, technology will keep changing warfare, but it cannot repair the organisational weaknesses of those who use it.

Strategic interoperability ultimately depends on whether democracies can find the will to build it.

The Cipher Brief is committed to publishing a range of perspectives on national security issues submitted by deeply experienced national security professionals. Opinions expressed are those of the author and do not represent the views or opinions of The Cipher Brief.

Have a perspective to share based on your experience in the national security field? Send it to Editor@thecipherbrief.com for publication consideration.

Read more expert-driven national security insights, perspective and analysis in The Cipher Brief

America’s battlefield dominance remains unmatched, but Iraq, Afghanistan and now Iran shows that tactical success increasingly fails when military power is not matched by a coherent political strategy.

No military in modern history has possessed the technological reach, global mobility and combat capability of the United States. Yet, its greatest battlefield victories have increasingly produced some of its most difficult strategic dilemmas.

This contradiction lies at the heart of American military intervention over the past several decades. Washington has repeatedly demonstrated its capacity to defeat formidable opponents, overthrow governments and deploy troops across vast distances. But military supremacy has not always produced the stability, legitimacy or political order American policymakers sought.

Afghanistan revealed the limits of occupation and state-building, ending not in lasting transformation but in the return of the Taliban in 2021 after their initial ouster by American forces twenty years earlier. Iraq showed how removing a hostile regime could unintentionally strengthen Iran’s strategic position and deepen regional instability. Iran itself has proven resilient, with external pressure often hardening rather than weakening its strategic posture. Meanwhile, the Arabian Gulf has become an unpredictable region, where security, energy and great-power rivalry intersect with global consequences.

These cases raise a central question: why do tactical victories so often produce strategic setbacks?

The answer lies in the changing character of ‘limited war,’ in which military superiority remains decisive on the battlefield, but political endurance increasingly determines strategic outcomes.

The Post-War Pattern: Tactical Success, Strategic Frustration

The paradox at the heart of American military intervention is neither new nor uniquely American.

Since the end of the Second World War, the United States has repeatedly demonstrated an unparalleled ability to project power globally. From Korea and Vietnam to the Gulf War, Afghanistan, and Iraq, no nation has matched America’s technological sophistication, logistical reach, intelligence capabilities, or ability to sustain expeditionary operations over long distances. This record is well documented in studies published by the RAND Corporation and the U.S. Army War College Press.

Yet history demonstrates that battlefield dominance alone does not guarantee political success.

The Korean War (1950-53) ended in containment rather than reunification, while Vietnam (1965-75) exposed the limitations of overwhelming firepower against an adversary willing to absorb enormous losses in pursuit of political objectives. The Coalition victory in the 1991 Gulf War reinforced the belief that precision-guided weapons, advanced command-and-control systems, and overwhelming technological superiority had fundamentally transformed warfare.

Following the collapse of the Soviet Union (1991), many policymakers concluded that American military superiority could reshape political realities well beyond the battlefield. Historical assessments by the U.S. Department of State Office of the Historian and the U.S. Army Center of Military History trace the evolution of these campaigns and their strategic consequences.

While military force remains highly effective at defeating conventional armies, destroying infrastructure, and removing governments. It has proven considerably less effective at building legitimate political institutions that can endure after foreign forces depart. As Carl von Clausewitz argued in his classic work, On War, war is an extension of politics by other means. Military victory therefore achieves little if political objectives remain undefined, unrealistic, or ultimately unattainable.

The challenge confronting modern intervention is not one of military capability but of strategic translation. Tactical victories increasingly fail to produce durable political outcomes because the post-intervention political environment is often more complex than the military campaign itself. As scholars of strategy, such as Lawrence Freedman, and the research communities at the Center for Strategic and International Studies (CSIS) and Royal United Services Institute (RUSI) have argued, the decisive challenge for modern military power is no longer winning the battle but securing a sustainable political end state.

Iraq: Breaking the Anti-Iran Bulwark

The invasion of Iraq in 2003 removed Saddam Hussein from power but also eliminated Iran’s principal regional counterweight.

What Washington saw as a decisive blow against a hostile regime became, in strategic terms, a gift to Tehran.

The collapse of Iraqi state institutions created a vacuum filled by sectarian competition, militia politics, and external influence. As Iraqi institutions weakened and political fragmentation deepened, sectarian identities grew more powerful, armed groups gained legitimacy, and the state’s monopoly on force eroded.

Iranian influence expanded through political allies, security networks, and Shia militias that embedded themselves in Iraq’s evolving political, post-Saddam order.

In an ironic twist, the U.S. intervention in Iraq was meant to reduce internal danger and violence; instead, it fostered a more favourable environment for Iran and the country’s political influence.

The United States spent enormous blood and treasure removing a regime that had contained Iran for decades. In seeking to eliminate one threat, Washington disrupted the regional balance and inadvertently strengthened another. Historically, Iraq stands not only as an example of a military campaign governed by ‘shock and awe,’ but remains a stark warning about the unintended consequences of overthrowing a state without understanding what will replace it.

The occupation of Iraq damaged U.S. credibility in the Middle East by disrupting power balances without a clear post-war strategy.

It increased uncertainty among allies, created opportunities for rivals, and enabled Iran to expand its influence, reshaping the strategic landscape and contributing to greater instability.

Afghanistan: The Limits of Military Occupation

Nowhere is this paradox of modern limited war intervention more apparent than in Afghanistan.

The United States and its allies rapidly dismantled Taliban rule following the attacks of 11 September 2001. Within months, al-Qaeda’s sanctuary had been destroyed, Taliban formations dispersed, and a new Afghan government established under international protection. Militarily, the campaign was remarkably successful. Contemporary assessments of the campaign and its objectives are documented by the U.S. Department of State Office of the Historian and the CFR.

The challenge emerged only after the battlefield had been won.

Over the next two decades, Coalition forces invested enormous resources attempting to build functioning political institutions, professional security forces, and a democratic state capable of sustaining itself. Yet legitimacy proved far more difficult to establish and sustain than military capability. Extensive investigations by the Special Inspector General for Afghanistan Reconstruction (SIGAR) repeatedly highlighted the disconnect between military achievements, governance reform, corruption, and institutional resilience.

Corruption, weak governance, factional politics, and ongoing insurgent pressure steadily eroded public confidence in Kabul’s authority. The human, financial and strategic costs of the intervention have been comprehensively documented by the Brown University Costs of War Project.

The Taliban understood a fundamental principle of limited war: they did not need to defeat NATO militarily, only to outlast the West’s commitment to supporting Kabul.

As domestic political support in Coalition capitals diminished, strategic patience shifted in favour of the Taliban-led insurgency. The collapse of the Afghan government in 2021 demonstrated that two decades of military success could not compensate for the absence of enduring political legitimacy. Subsequent analyses by the CFR and the SIGAR conclude that institutional fragility ultimately proved more decisive than Coalition military capability.

Afghanistan, therefore, offers a broader lesson. In modern limited wars, technologically superior powers often discover that destroying hostile forces is considerably easier than replacing the political order those forces once sustained.

The lesson from Afghanistan is not unique.

In modern conflicts, technologically advanced militaries increasingly find that battlefield success is becoming decoupled from political outcomes. This reflects a broader evolution in limited war, where endurance, legitimacy and the capacity to impose continuing costs frequently outweigh conventional military superiority.

Recent assessments by the RUSI, the CSIS and the Modern War Institute at West Point (MWI) increasingly argue that political resilience and strategic endurance have become as important as battlefield dominance in determining the outcomes of contemporary conflicts.

Conclusion: Rethinking Military Success

There is an old regional saying that, rather than killing the snake, repeated attempts to strike it often make it more dangerous.

The 2026 Iran War is the starkest test of that proposition in a generation.

The US-Israeli military campaign that began on 28 February inflicted severe damage on Iran’s nuclear and missile infrastructure and, according to multiple reports, killed Supreme Leader Ali Khamenei. Judged by the metrics Washington and Jerusalem set—degrading capability and decapitating leadership—the campaign appeared to succeed.

Yet strategic outcomes are far less straightforward.

Reporting from Reuters, the BBC, and other outlets indicated that despite the shock of the strikes, the Iranian system moved quickly to preserve continuity. The Revolutionary Guard and other coercive institutions positioned themselves as defenders of a nation under attack. This pattern aligns with longstanding scholarship on external pressure and authoritarian resilience, which shows that coercion may consolidate regimes as easily as it weakens them. Iran’s economy was battered, its proxies pressured, and its deterrent credibility damaged, but the outcome Washington most wanted to prevent—regime survival—persisted.

This is not a defence of the regime, nor an argument that the strikes were unjustified.

Rather, it is an argument that force applied without a coherent theory of political aftermath can entrench the very resilience it seeks to break.

Iran has been hit hard, but it has also adapted, hardened, and become more difficult to read strategically. That unpredictability does not stop at Iran's borders; it radiates outward, especially across the waterway connecting Iran to global markets.

The lesson from Iraq, Afghanistan, and Iran is not that military intervention should never occur, nor that the United States should retreat from its global responsibilities.

Instead, the character of limited war is evolving in ways that increasingly favour politically resilient adversaries over technologically superior expeditionary powers.

This shift has become a recurring theme in contemporary strategic analysis published by the RUSI, the CSIS, and the MWI.

Cheap autonomous systems have fundamentally altered the economics of military power.

During the Cold War, technological superiority rested upon expensive platforms fielded by a handful of industrialised states. Today, relatively inexpensive drones, AI-enabled targeting systems and commercial technologies have dramatically lowered the barriers to resistance, enabling weaker actors to impose disproportionate costs upon militarily superior opponents.

Recent assessments by the Center for Strategic and Budgetary Assessments (CSBA), CSIS, and RUSI suggest that the strategic premium once attached to technological superiority is steadily being eroded.

Meanwhile, democratic powers continue to operate under political constraints imposed by public opinion, electoral cycles, international law, alliance commitments, and coalition management.

Their adversaries often face far fewer such limitations.

Victory is therefore no longer determined solely by military technology, but increasingly by which political system can sustain the contest for longer.

This observation reflects the enduring insights of Carl von Clausewitz and later strategic thinkers such as Robert Endicott Osgood, whose work Limited War: The Challenge to American Strategy (1957) emphasised the intimate relationship between military operations and political objectives.

The United States remains the world’s most capable military power.

Nothing in Iraq, Afghanistan, and now Iran diminishes that reality. These conflicts, however, reveal that military superiority alone no longer guarantees strategic success.

The ability to destroy an adversary’s military capability is no longer synonymous with the ability to shape the political environment that follows. As recent analyses by the International Institute for Strategic Studies (IISS) and RUSI continue to argue, the decisive challenge for modern armed forces increasingly lies in translating battlefield success into enduring political outcomes.

The challenge for American policymakers is therefore not simply how to strike harder or faster, but how to ensure that military action serves coherent political objectives capable of enduring long after the shooting stops.

Great powers rarely decline because they lose battles.

More often, they decline because they mistake military victory for strategic success.

Military technology can destroy armies. It cannot, by itself, create political legitimacy.

Until strategy gives equal weight to what happens after the battlefield falls silent, even the most technologically advanced militaries will continue to confuse tactical victory with strategic success.

The Cipher Brief is committed to publishing a range of perspectives on national security issues submitted by deeply experienced national security professionals. Opinions expressed are those of the author and do not represent the views or opinions of The Cipher Brief.

Have a perspective to share based on your experience in the national security field? Send it to Editor@thecipherbrief.com for publication consideration.

Read more expert-driven national security insights, perspective and analysis in The Cipher Brief