IMF: wars leave decade‑long scars

The International Monetary Fund put a number on something markets usually describe in vague language: when a country goes to war, its economic output falls about 3% at the start and the cumulative loss reaches roughly 7% within five years on average. Its researchers said the damage often lasts for more than a decade. (imf.org) The Fund also said wars now come with spillovers that hit neighbors and trading partners, not just the country where the fighting happens. Refugee flows, broken transport routes, and higher borrowing costs spread outward like a factory shutdown that knocks out every supplier on the same road. (imf.org) That warning landed as the International Monetary Fund’s managing director, Kristalina Georgieva, said the Iran war was darkening the world outlook even if a ceasefire survives. She said the conflict was already affecting oil, gas, and shipping channels, which is exactly how a regional war turns into a global inflation problem. (apnews.com) The shipping channel in this case is the Strait of Hormuz, the narrow waterway between Iran and Oman that carries a large share of the world’s seaborne oil. Reuters reported that North Atlantic Treaty Organization Secretary General Mark Rutte was pressing allies for commitments tied to securing that route after President Donald Trump demanded action within days. (reuters.com) A ceasefire on paper has not restored normal traffic. CBS reported that only about a dozen ships passed through the Strait of Hormuz in the first two days of the truce, far below normal prewar levels, which shows how quickly insurance costs and fear can choke trade even after missiles stop. (cbsnews.com) The United Nations said on April 8 that the United States and Iran had announced a two-week ceasefire after nearly 40 days of hostilities, but it also reported continued Israeli strikes and fresh casualties in Lebanon. A ceasefire that keeps leaking violence does not give central bankers or investors much reason to relax. (news.un.org) The other piece of the story is defense spending. The International Monetary Fund said higher military budgets can force governments into hard choices between debt, taxes, and cuts elsewhere, especially in countries that were already carrying heavy deficits before the latest fighting. (imf.org) That is why a North Atlantic Treaty Organization rift matters economically even before it matters militarily. If Washington looks less predictable, European governments have to assume more of their own defense bill, and markets have to price both bigger borrowing needs and a weaker security umbrella at the same time. (reuters.com) The International Monetary Fund’s point was not that every war produces the same loss. Its point was that modern conflicts now hit energy, shipping, migration, public budgets, and investor confidence all at once, which is why the economic scar can outlast the battlefield by ten years or more. (imf.org) So when forecasters trim growth or nudge inflation expectations higher in April 2026, they are not reacting only to bombs falling this week. They are pricing in the long repair bill that usually arrives after the headlines move on. (imf.org)