Three Litres a Day

Britain’s new household checklist is precise. Keep three litres of drinking water per person per day, enough food for three days, a torch, a radio and cash in mixed denominations in case card payments fail. The Cabinet Office launched it on 22 October as the first phase of a three-year campaign. Two days later the defence secretary wrote that Britain had little more than 1,000 days to be ready to fight a major war.

Put those two documents side by side and a question appears that the campaign never asks. If the state expects a crisis serious enough to cut water, power and payments, why is the plan for the first 72 hours a shopping list for households? The answer says a lot about how Western governments now think of security, and about who they expect to pay for which part of it.

From Protected Citizen to Resilient Citizen

The 72-hour figure has a respectable origin. It is roughly how long emergency services need to reach everyone after a major disaster, and the EU adopted it as a baseline in its March 2025 preparedness strategy. Elsewhere the number grows with the threat. Sweden asks households to cope for a week, and tells every resident they have a role in its total defence. Germany’s civil protection office recommends ten days of supplies, yet finds only one German in three is prepared for a supply failure. Poland mailed a safety handbook to all 17 million households this year.

Underneath runs a shift in the social contract. The Cold War “protected citizen” model relied on the state to shelter, feed and evacuate the population. The new “resilient citizen” model asks people to carry the first days themselves while the state concentrates on defence. All this is happening as NATO allies commit to spending 5% of GDP on defence and security by 2035, the benchmark hanging over July’s NATO summit in Ankara.

The Stockpile Test

The debate usually splits two ways. One side says the resilient-citizen model is simply honest: grids, supply chains and digital payments really are fragile, and no state can reach every household in hours. The other calls it cost-shifting, with households buying beans while ministries buy missiles. Both miss the variable that actually decides the question: whether the state holds stocks of its own. A household kit with no public reserve behind it is a hope, not a plan.

Finland shows what the honest version looks like. It asks households to keep supplies for 72 hours, and in September it raised the state’s strategic grain reserve from six to nine months of consumption. Its National Emergency Supply Agency contracts partners to hold and rotate that grain, so the reserve is a state obligation, not a hope that shops stay open. The household kit bridges the gap until a state system that exists can respond. Sweden runs the same logic under total defence: citizens hold a week, and the state holds the rest. In that model the 72-hour kit is a division of labour, not an abdication.

Now look at where the money is going elsewhere. Germany has committed €10 billion to civil defence until 2029, which is real money. Yet its 579 public shelters hold about 480,000 people in a country of 84 million, roughly one place for every 175 residents. Shelter counts are a crude measure, but they show the distance between what the state asks of households and what it has built for them. Britain’s campaign asks households to buy kit gradually on normal shopping trips, and its launch statement names no new state stockpile alongside it. The household is asked to hold three days, and nobody has said publicly what the state holds for day four.

NATO’s own rules sharpen the point. The alliance’s new resilience baseline requirements let allies count up to 1.5% of GDP of the 5% target as defence-related spending, including resilience and civil preparedness. That envelope can fund shelters, grain, water systems and backup power. It can also absorb bridges, cyber agencies and military mobility projects, which are useful but are not what keeps a family fed on day four. How governments spend that 1.5% will show which form of security they are funding and which they are leaving to households.

There is a deeper warning in this year’s energy crisis. The public stockpile most Western governments do hold, emergency oil, has been drawn down to multi-decade lows by the Hormuz closure. The state buffers that exist are thin, and the ones that matter for households, such as food, water, medicine and shelter, are thinner still or missing.

The strongest objection is that household stockpiling costs almost nothing and saves lives, whatever the state does. Three days of water and tins is cheap, and it frees emergency services for the people who cannot help themselves. That is true, and it is why the advice is right. But the advice is not the policy. A 72-hour kit makes sense as the first layer of a system. Presented on its own, next to a war-readiness countdown and a 5% defence target, it is a statement of what the state will not do.

Which Model Wins

Base case (roughly 50%): kits without stocks. Most Western governments keep promoting 72-hour kits while their resilience spending goes mostly to military mobility, cyber and infrastructure hardening. Household advice becomes routine background, much like fire-alarm reminders, and retailers see a modest seasonal lift in water, tins and batteries. State stockpiles of food, water and medicine grow slowly or not at all outside the Nordic and Baltic states. The key assumption is that no prolonged civilian crisis tests the gap before 2030.

Downside case (roughly 30%): day four arrives. A multi-day grid failure, a cyberattack on payments or a severe winter storm outlasts the 72-hour window in a country without state reserves. Households that followed the advice run out on schedule, and there is no state system behind them. The political backlash lands on defence budgets: why 5% for weapons and nothing for water? For governments, this is the scenario that turns resilience into an election issue.

Upside case (roughly 20%): the Finnish model spreads. Allies use NATO’s 1.5% resilience envelope to build visible public stocks, shelters and backup systems, and they publish what the state will provide after day three. The 72-hour kit becomes the first layer of a declared system rather than the whole of it. Finland’s approach of contracting private firms to hold and rotate stock is cheap enough to copy. It requires finance ministries to accept that civilian resilience spending counts as defence, which NATO’s rules already allow.

The Question Nobody Asks on Day Four

The 72-hour kit is not a betrayal of citizens. Where the state holds the stocks behind it, as in Finland and Sweden, it is good civil defence. Where it stands alone beside a 5% defence target, it shifts part of the cost of security onto households without saying so. The test of fairness is simple: a government that publishes its household checklist should publish what the state itself holds.

Watch for: how allies divide NATO’s 1.5% resilience allowance in their next national spending plans. The share going to civilian stockpiles, shelters and water systems, rather than bridges and cyber agencies, will show which security is being funded. Every government now tells its citizens what to keep for three days. Very few will say what the state keeps for the fourth.