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Stock up on food. Keep water at home. Have a battery radio and some cash ready. Versions of that message have now reached households in the United States, Britain, Japan, Germany, Sweden, Poland, Taiwan and across the European Union — and every time a new government repeats it, the same question explodes online: is this preparation for a big war, or preparation for disaster? The honest answer, country by country, is more specific than either headline.
The 72-hour club, and the countries that ask for more
The most common standard is 72 hours. The European Union's Preparedness Union Strategy, adopted in March 2025, asks every household in its 27 member states to be self-sufficient for at least three days. Britain's "Be Ready" campaign, launched this October, uses the same three-day benchmark — three litres of water per person per day, tinned food, torches, batteries and enough cash in case payment systems go down. France's official guide also works on 72 hours.
EU commissioner Hadja Lahbib launched the strategy by unpacking her own emergency bag on social media — documents in a waterproof pouch, canned food, bottled water, matches, a Swiss army knife, cash, medicines, a radio, even playing cards:
Today, the EU launches its new #Preparedness Strategy.
— Hadja Lahbib (@hadjalahbib) March 26, 2025
“Ready for anything” — this must be our new European way of life. Our motto and #hashtag. pic.twitter.com/fA1z8ZvMDA
Some countries ask for considerably more. Sweden's official booklet "In case of crisis or war", sent to every household, tells people to manage on their own for at least a week — and says plainly that if Sweden is attacked, "we will never give up". Norway and Taiwan use the same one-week standard. Germany's civil protection agency goes furthest, recommending ten days of food and water. Japan asks for at least three days of food and water at home, plus a week for people in high-risk areas — but frames it entirely around earthquakes and volcanic eruptions, with no war scenario mentioned. The United States' Ready.gov advises "several days" of supplies for disasters, again with no war framing at all.
What governments say the reason is
Read the documents rather than the headlines, and the official reason is consistently a bundle of hazards, not one war: natural disasters and extreme weather, power blackouts, cyberattacks, pandemics, supply-chain breakdowns — and, in Europe's case, hybrid attacks and the war in Ukraine. The timing supports that reading. Europe's big push followed three specific shocks: the Ukraine war, the COVID pandemic's empty shelves, and the April 2025 blackout that knocked out power across Spain and Portugal for around ten hours.
The details also give the game away. A battery radio matters because it is the one channel that survives a total power and network failure. Cash matters because card payments die in a blackout. Those are disaster-planning items — they make just as much sense in a flood as in a conflict, which is exactly the point of what planners call "all-hazards" preparedness.
So is a big war coming?
War is genuinely in some of the documents — Sweden's booklet is literally titled "In case of crisis or war", Poland's 2025 guide lists evacuation under fire, and Germany orders shelters in every new building. Senior officials have also attached dates to the risk. NATO chief Mark Rutte warned in December 2025 that "we are Russia's next target" and urged allies to be ready for a fight "within five years". Britain's defence secretary spoke this month of being ready "to fight and win" within roughly 1,000 days as adversary forces grow toward 2030.
But read those timelines carefully: they describe when Russia might rebuild the capability to attack — not a prediction that an attack is coming. NATO's top military commander, General Alexus Grynkewich, assessed in July 2026 that a Russian ground attack on NATO territory before 2027 is "highly unlikely". Denmark's intelligence service says the same in reverse: Russia is not expected to risk war with NATO while the Ukraine war continues. And every stockpiling campaign, without exception, publicly denies that any specific attack is imminent.
How the "World War III" version spreads
Online, the careful wording disappears. Lahbib's kit video was clipped and reposted within days as proof that "the EU is preparing for war against Russia" — this single reaction post was shared worldwide:
The European Union has prepared a survival advisory for a 72-hour bug out bag in preparation for war against Russia.
— Ian Miles Cheong (@stillgray) March 28, 2025
Very delusional stuff. War will either go on for years or end within a matter of hours. pic.twitter.com/XAxtfj7Gzx
The viral lists that followed strip every date and reason away, stacking a decade of separate national guides — some from 2016, some from 2025 — into one screenshot that looks like a single coordinated order. It is not. These campaigns appeared country by country, over ten years, each after its own local shock. The pattern is real; the single secret trigger is not supported by any document.
Where war genuinely is central, the preparation also looks completely different from a three-day food kit. Ukraine itself — a country actually fighting — orders shelters, air-raid alerts and blackout routines, not pantry advice. A government expecting imminent war does not tell citizens to buy pasta and batteries; it mobilises. Nobody on this list is doing that. What they are doing is cheaper and duller: after a decade of pandemics, blackouts and one land war in Europe, telling households to be able to look after themselves for a few days — and hoping they never have to. For how fast a real regional escalation can move, see our explainer on Iran's seven-day deal.