The evidence and arguments behind one word

What does
war conceal?

War is usually described through aims, victory and defence. Less visible is its full account: people, money, the environment, institutions and individual responsibility. This project brings those layers together without pretending that one statistic settles the argument.

Archival aerial photograph of the extensively destroyed centre of Cologne in 1945.
Cologne · 1945A destroyed city centre7th Photo Reconnaissance Group USAAF · public domain ↗
USD 2,887bnworld military expenditure in 2025 · SIPRI
65state-based armed conflicts recorded in 2025 · UCDP
10%≈ USD 288.7bn · modelled amount in the comparison below

The answer without a shortcut

Would moving 10% of military spending solve global problems?

No. Roughly USD 288.7 billion would be large enough to expand several humanitarian, health, education, science and climate programmes. The comparison shows the scale of a political choice. It does not prove that money can be transferred immediately, absorbed efficiently or produce a guaranteed result.

01 / Budget comparison

What is the opportunity cost of military expenditure?

The slider compares a share of one year of world military expenditure with published budgets and financing needs. Each card states its period; annual budgets and multi-year programmes are not treated as identical.

10%of world military expenditure in 2025

Selected share: 10 percent

0.5%50%
Annual amountUSD 288.7bnselected share of the 2025 global total
Humanitarian aid8.7×

the entire UN humanitarian appeal for 2026

One-year requestOCHA
Education3.0×

the estimated annual education financing gap in lower-income countries

Estimated USD 97bn per yearUNESCO
Tuberculosis13.1×

the annual target for prevention, diagnosis, treatment and care

Political funding target for 2027Stop TB Partnership
Immunisation24.3×

Gavi's full five-year target budget to protect 500 million children

Programme for 2026–2030Gavi
Climate adaptation79–93%

of developing countries' estimated annual adaptation needs in 2035

UNEP range: USD 310–365bnUNEP
Water and sanitation2.5×

estimated annual capital costs of universal access to water and sanitation

2016 study · prices of that periodWorld Bank
Interactive model

Allocate USD 288.7 billion

Source amount: USD 288.7 billion. Changing one field adjusts the others proportionally so the total remains 100%.

Education

USD 57.7bn

allocated amount
20 %

60 % of UNESCO's estimated annual financing gap

Health

USD 57.7bn

allocated amount
20 %

2.6× of the annual target for tuberculosis funding

Science

USD 57.7bn

allocated amount
20 %

6.5× of the NSF annual budget

Climate adaptation

USD 57.7bn

allocated amount
20 %

17 % of the midpoint of UNEP's annual-needs estimate

Water and sanitation

USD 57.7bn

allocated amount
20 %

51 % of estimated annual capital costs

The model only allocates the amount and compares orders of magnitude. It does not account for absorption capacity, political feasibility, construction time, or the fact that security spending cannot be removed unilaterally without changing risks.

i

Method note: the calculator combines annual budgets, multi-year programmes, financing needs and current investment volumes. It compares orders of magnitude; it does not claim that any selected share is immediately available. Source comparisons remain in USD.

Questions, not slogans

Six parts of the argument

Law and ethics

When can force be justified?

The strongest case for defence, and the legal and moral limits it must meet.

Read the argument
Human and environmental account

What does a military budget omit?

Death, injury, displacement, toxic damage, reconstruction and lost investment.

Read the account
Psychology and its limits

How is obedience produced?

Authority, language, divided tasks and the contested interpretation of Milgram.

Read the analysis
Oral history

What can personal testimony establish?

Experience can reveal mechanisms and moral conflict, but cannot establish prevalence.

Read the limits
Policy and institutions

What can reduce the risk of war?

Defence, law, diplomacy, resilient institutions, prevention and arms control.

Read the framework
Editorial standard

How are facts separated from judgement?

Primary sources, explicit uncertainty, strong counterarguments and public corrections.

Read the method

02 / Defence and law

Rejecting war does not require abandoning the attacked.

Article 2(4) of the UN Charter prohibits the threat or use of force. Article 51 preserves individual and collective self-defence after an armed attack, and Chapter VII gives the Security Council powers to respond to threats to peace.

This is not a blank cheque. International humanitarian law still requires distinction, proportionality and precautions. The strongest objection to a pacifist thesis is that credible defence may deter aggression and protect people who cannot safely refuse violence.

UN Charter · Article 51UN Charter · Chapter VIIICRC · conduct of hostilities

03 / Costs and impacts

War is a major cause of forced displacement, not the only one.

Persecution, mines, destroyed infrastructure, distrust and climate pressures can continue after fighting ends. Refugee numbers therefore cannot be derived from military expenditure alone.

41.6m

people in the combined refugee category reported by UNHCR and UNRWA

UNHCR
68.7m

people internally displaced by conflict and violence

UNHCR

What budgets cannot repair alone

Safe return also requires law, functioning institutions, housing, work and long-term trust.

Military emissions

A 2022 model estimated a 3.3–7% range, with about 5.5% as its midpoint. It is an extrapolation from incomplete data, not a global inventory.

SGR & CEOBS · 2022 estimate

04 / Obedience and conscience

Responsibility can be divided. It cannot be made to disappear.

OHCHR · conscientious objection
  1. 01Authority defines a legitimate objective
  2. 02Language simplifies the image of an opponent
  3. 03The task is divided among many roles
  4. 04Each person perceives a smaller personal share
  5. 05Checks: law, conscience and a real possibility of refusal

05 / Voices from service

Testimony reveals experience. It does not establish prevalence.

The Czech edition presents five archived accounts concerning civilian protection, conscience, refusal and the consequences of service. They can show how people understood a situation and which moral pressures they remember.

They cannot tell us how typical those experiences were. Time since the event, retrospective reconstruction, self-selection, survival and archive selection all limit generalisation. Personal testimony is therefore kept separate from experimental, legal and statistical evidence.

Oral History Association · Core PrinciplesImperial War Museums · collections

06 / Prevention

UN and World Bank models estimate that one dollar invested in prevention could save up to sixteen dollars in later costs in some scenarios.

This is not a universal rate of return. It depends on the conflict, timing and institutional quality. Prevention complements the defence of people under attack; it is not a promise that every aggressor can be persuaded.

UN & World Bank · Pathways for Peace

Verified quotation · abbreviated

“Every gun that is made, every warship launched, every rocket fired signifies … a theft from those who hunger and are not fed.”
Dwight D. EisenhowerThe Chance for Peace · 16 April 1953
Archival source and context

07 / Editorial standard

A strong argument is not enough. It must be checkable.

Major claims link to primary studies, official statistics or archival records. Facts, estimates, interpretations and hypotheses are labelled separately. The strongest reasonable counterargument is presented before an editorial judgement.

Short answer

What is known

State the conclusion and immediately say what the evidence does not establish.

Other side

What it contests

Present the strongest reasonable objection, not a weak substitute.

Traceability

Where it comes from

Link to the original record and explain what the number actually measures.

Public correction

When we are wrong

Date the change, explain the reason and preserve a visible correction record.

Fact

World military expenditure reached USD 2,887bn in 2025.

A published aggregate with a defined year, currency and methodology.

SIPRI · 2025 expenditure
Interpretation

The figure reveals opportunity costs, not an immediately transferable fund.

Programmes differ in timing, capacity, governance and the risks they address.

Hypothesis

Earlier prevention may reduce both violence and later public costs.

Plausible and modelled in some settings, but not guaranteed in every conflict.

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