What If We'd Done Nothing?

The Thesis

American foreign policy operates on a default assumption: doing something is always better than doing nothing. When there is a crisis, a dictator, a threat — the instinct is to intervene. The political cost of inaction is perceived as higher than the cost of action. Presidents who “do nothing” are called weak. Presidents who bomb things are called decisive.

But what does the data actually show? When we look at the five major US military interventions since Vietnam — in aggregate, costing over $6+ trillion and hundreds of thousands of lives — did intervention produce better outcomes than the counterfactual of non-intervention?

The answer, in every single case, is no.

The Political Economy of Intervention

Why does the United States keep repeating the same pattern? Why does every war cost more and achieve less than predicted? Why is the "do something" instinct so strong when the evidence for its effectiveness is so weak? The answer lies in the incentive structure that rewards intervention and penalizes restraint.

The Prediction Racket

Every intervention begins with optimistic predictions about cost, duration, and likelihood of success. These predictions are always wrong in the same direction. This is not incompetence — it is how the system works. Honest predictions would prevent wars. Dishonest predictions enable them.

What We Could Have Built Instead

The opportunity cost of American interventions is staggering. The $8 trillion spent on post-9/11 wars could have solved most of America's domestic problems and transformed human civilization. Instead, it was spent creating more problems in foreign countries.

When Diplomacy Actually Worked

The same foreign policy establishment that promotes military intervention often dismisses diplomacy as "weak" or "naive." But diplomatic solutions to major crises have consistently proven more effective, less costly, and more durable than military ones.

The Hidden Costs: Veterans and Long-term Consequences

The official cost of wars only includes direct military spending during active combat. But wars create obligations that last for generations. Veterans' healthcare, disability payments, and family benefits continue for 50+ years after wars end. The largest costs of Vietnam are still ahead of us.

Containment vs. Regime Change: A Historical Analysis

The Cold War proved that containment works. The Soviet Union, the most powerful adversary America ever faced, collapsed peacefully after 40 years of deterrence and economic pressure. No invasion was required. No nuclear war occurred. The same approach could work with smaller adversaries — but it requires patience and the political courage to resist calls for immediate action.

Economic Warfare: The Middle Ground

Between military intervention and "doing nothing" lies economic warfare: sanctions, financial isolation, trade restrictions, and technological embargos. These tools are imperfect and slow, but they avoid the human costs and blowback effects of military action while still imposing real costs on adversaries.

Allied Pressure and the Intervention Trap

One factor that drives American interventions is pressure from allies who want US military power to solve their regional problems. Israel pushes for strikes on Iran. Saudi Arabia wants help in Yemen. France requests support in Africa. The UK generally supports whatever Washington wants to do. These pressures create a ratchet effect toward more intervention, not less.

The Cambodia Effect: When Intervention Creates Worse Outcomes

The most devastating argument against the “do something” doctrine is when intervention actively creates worse outcomes than would have occurred without it. The clearest case is Cambodia.

The US secretly bombed Cambodia from 1969 to 1973, dropping more tonnage than was dropped on Japan in all of WWII. The bombing was meant to disrupt North Vietnamese supply lines (the Ho Chi Minh Trail). Instead, it destabilized Cambodia, radicalized the population, and drove recruitment for the Khmer Rouge — a fringe communist movement that had been marginal before the bombing began.

The Khmer Rouge took power in 1975 and proceeded to carry out one of the worst genocides in human history, killing an estimated 1.5 to 2 million Cambodians — roughly 25% of the country's population. CIA and State Department analysts have assessed that without the US bombing campaign, the Khmer Rouge would likely never have gained enough popular support to seize power.

The US intervention didn't prevent a catastrophe. It caused one.

The Iraq-ISIS Pipeline

The same pattern repeated in Iraq. The 2003 invasion, followed by Paul Bremer's catastrophic decision to dissolve the Iraqi military (disbanding 400,000 armed men with no jobs and no future), directly created the conditions for the rise of ISIS. Former Iraqi military officers formed the backbone of ISIS's military command. The organization literally could not have existed without the power vacuum and radicalization created by the US invasion.

The US then spent billions more fighting ISIS — the monster it had created. The war to fix the consequences of the previous war. It is the most expensive self-own in military history.

The Weapons Pipeline: Libya to the Sahel

When NATO bombed Libya in 2011, Gaddafi's extensive weapons arsenals were looted. Those weapons — including MANPADS (shoulder-fired anti-aircraft missiles), heavy machine guns, RPGs, and millions of rounds of ammunition — flowed south across the Sahara into Mali, Niger, Nigeria, and Chad. They fueled the Tuareg rebellion in Mali (2012), the rise of Boko Haram in Nigeria, and the broader Sahelian insurgency that has destabilized the region for over a decade.

The intervention to “prevent a humanitarian crisis” in Benghazi created humanitarian crises across half a continent. The cure was worse than the disease — a pattern so consistent it should be the first assumption of any policy analysis, not the last.

Why “Doing Nothing” Isn't Actually Doing Nothing

The framing of “intervention vs. doing nothing” is itself a manipulation. Not invading a country doesn't mean doing nothing. The US has an enormous range of non-military tools: diplomacy, sanctions, economic incentives, intelligence operations, international institutions, and soft power. The choice was never between “bomb Iraq” and “do nothing about Saddam.” Saddam had been contained by sanctions and no-fly zones for 12 years. Containment was working. The inspectors were right — there were no WMDs.

Similarly, in Afghanistan, the choice was never “occupy for 20 years” or “let al-Qaeda run free.” The targeted operation that killed bin Laden — a helicopter raid into Pakistan that cost perhaps $1 million — achieved more than the $2.3 trillion 20-year occupation. The special operations and intelligence approach always existed as an alternative. It was simply less politically dramatic than a full-scale invasion.

The Prediction Problem

Every intervention is sold on optimistic predictions. The war will be short. The costs will be low. We'll be greeted as liberators. Democracy will flourish. The pattern is so consistent it should be treated as a law of nature:

Every war costs more, takes longer, kills more people, and achieves less than its proponents predict.

• Iraq 2003: Rumsfeld predicted “five days or five weeks or five months, but it certainly isn't going to last any longer than that.” It lasted 8 years (and the consequences are still ongoing).
• Afghanistan 2001: Expected to be a quick punitive raid. Lasted 20 years.
• Vietnam 1965: McNamara's Pentagon predicted victory within two years. The war lasted 10 more years.
• Iraq cost predictions: The White House estimated $50–60 billion. Actual cost: $2.4 trillion. Off by 40×.
• Afghanistan cost: No initial estimate was ever publicly provided. Final bill: $2.3 trillion.

If every prediction is wrong in the same direction — underestimating cost, duration, and casualties — then the rational response is to assume the next prediction will also be wrong in the same direction. The burden of proof should be on those who claim intervention will be quick, cheap, and effective — because it never has been.

Applying This to Iran 2026

As of March 3, 2026, the US is four days into Operation Epic Fury against Iran. The pattern is already visible: the operation was supposed to be a limited air campaign, but Hezbollah has entered, Israel is invading Lebanon, the Strait of Hormuz is closed, Qatar is conducting its own strikes, and 11 countries are involved.

Iran has 88 million people — 2.5× Iraq's population. Its terrain is mountainous and vast (roughly the size of Alaska). It has genuine military capabilities, a sophisticated proxy network, and the ability to disrupt the global economy through the Strait of Hormuz.

If the Iraq War cost $2.4 trillion against a smaller, weaker country — and every war costs more than predicted — what will Iran cost? The Watson Institute's preliminary estimate suggests $3–5 trillion for a sustained campaign, not including occupation. If occupation follows, multiply that by 3–4×.

The counterfactual? Iran was contained. The JCPOA nuclear deal was working until the US withdrew in 2018. Iran's economy was constrained by sanctions. Its nuclear program was limited and monitored by IAEA inspectors. Diplomacy was slow and imperfect, but it was 100× cheaper than war and 1,000× less deadly.

The Bottom Line

The United States has spent over $6 trillion on military interventions since Vietnam. Every one cost more than predicted, lasted longer than planned, killed more people than expected, and achieved less than promised. In several cases — Cambodia, Iraq/ISIS, Libya/Sahel — intervention actively created worse outcomes than would have occurred with non-intervention.

The Marshall Plan rebuilt an entire continent for $170 billion. The Iraq War cost 14× more and destroyed one country. Afghanistan cost 13.5× more and accomplished nothing that lasted. The cost of building is a fraction of the cost of bombing. The returns on building are permanent. The returns on bombing are negative.

The pattern is so clear, so consistent, and so well-documented that continuing to ignore it is not a policy failure — it is a choice. The choice to keep bombing, keep spending, and keep pretending the next war will be different. It won't be. It never is.

The Iran Test Case (2026): Applying the Lessons

As this analysis is being written, the United States is five days into Operation Epic Fury against Iran. All the familiar patterns are emerging: the operation was supposed to be limited and surgical, but it's expanding. Iran was supposed to be isolated, but 11 countries are now involved. The strikes were supposed to degrade Iranian capabilities, but they've strengthened Iranian resolve and regional support.

The cost predictions follow the familiar pattern. The administration estimated $50-100 billion for a "limited air campaign." Based on historical error rates, the actual cost will likely be $2-5 trillion. The duration was supposed to be "weeks, not months." Based on every previous intervention, it will likely last years or decades.

The counterfactual remains visible: Iran was contained by sanctions and diplomatic pressure. The JCPOA nuclear deal was constraining Iran's nuclear program until the US withdrew in 2018. The same approach that worked with the Soviet Union — patience, deterrence, and economic pressure — could work with Iran at 1/100th the cost and 1/1000th the casualties.

But the incentive structure demands intervention. Defense contractors' stock prices rose when the strikes began. Politicians from both parties called the president "decisive." Cable news ratings spiked. The same actors who benefit from intervention are the ones deciding whether to intervene. The outcome is predetermined by the process.

“Military action is the most expensive solution to every problem, and the least likely to succeed.”

A Modest Proposal: The Non-Intervention Default

Given the consistent failure of military interventions and the consistent success of alternatives, American foreign policy should operate from a non-intervention default. Before any military action, policymakers should be required to answer these questions:

1. What is the counterfactual? What happens if we do nothing?
2. What are the historical precedents? When has this type of intervention succeeded?
3. What are the realistic cost estimates? Based on historical error rates, multiply initial estimates by 10-50×.
4. What are the incentives of those recommending intervention? How do they benefit financially or politically?
5. What diplomatic alternatives exist? Have they been exhausted or just ignored?
6. What are the long-term commitments? Are we prepared for 20+ years of involvement?
7. What are the opportunity costs? What domestic problems could be solved with the same resources?

If these questions had been asked and honestly answered before Vietnam, Iraq, Afghanistan, Libya, and Syria, none of those interventions would have occurred. Millions of lives would have been saved. Trillions of dollars would have been available for productive uses. America would be stronger, not weaker.

The cost of doing nothing is almost always lower than the cost of doing something. The burden of proof should be on those who want to bomb, not those who want to wait. Patience is not weakness. It is wisdom.

Sources & Documentation

Further Reading

• Pentagon Waste: Where the Intervention Money Actually Goes
• Manufacturing Consent: How Every War Gets Sold
• Veterans Betrayed: The Long-term Human Costs
• The War Economy: Who Actually Benefits
• Environmental Cost of War: The Hidden Damage
• The Surveillance State: How War Powers Become Permanent

Current Conflicts

• Iran Conflict: Real-time cost analysis of current intervention
• Ukraine War: Proxy intervention costs and commitments
• Yemen: Saudi-US partnership and humanitarian costs