The Carbon Cost of Conflict – How Wartime Supply Chains Are Derailing Global Climate Goals

When you look at the casualty figures for the last four years, the first thing you notice is how neat the numbers appear on paper. This is 237 million tonnes. There are thirty-three million. Five plus from the most recent round between Tehran, Tel Aviv, and Washington. neat little entries in a ledger that no one is formally maintaining. However, the abstraction crumbles when you scroll past a video of black rain falling somewhere outside Bandar Abbas or stand at a port in Karachi and watch fertilizer prices tick up on a trader’s screen.

There is a long shadow, an aftertaste, and a smell associated with war. Additionally, it has a carbon footprint, which is subtly disastrous for the climate math that the world spent ten years negotiating in Dubai, Glasgow, and Paris. More than 300 environmentally significant incidents have been reported by the Conflict and Environment Observatory in the current Iran theater alone. This number seems almost bureaucratic until you consider that each incident is a fire, spill, or chemical plume that is drifting where it was never supposed to.

Observing this from a distance, it’s remarkable how thoroughly military emissions evade official climate accounting. Defense reporting is optional, frequently classified, and hardly ever incorporated into national inventories under the UNFCCC framework. It is now referred to by researchers as the “carbon bootprint,” a term that becomes more meaningful the more you think about it. By some accounts, the US Department of Defense is the world’s biggest institutional fossil fuel consumer. larger than whole nations. On a balance sheet, no one really needs to say that.

Emissions from the conflict between Russia and Ukraine alone are about equal to Spain’s yearly production. Not from manufacturing facilities. Not from automobiles. from devastation. That is extremely unsettling because, in contrast to industrial emissions, none of it creates anything. It simply burns. The rebuild, which is in some ways worse, follows. Reconstruction in Gaza, eastern Ukraine, and eventually parts of Iran will lock in emissions for decades because steel and cement are two of the most carbon-intensive materials produced by humans.

The consequences of the policy are already apparent. Following 2022, Europe scrambled, REPowerEU pushed renewables more forcefully than anyone had anticipated, but coal use also gradually increased, and LNG terminals appeared along coastlines like mushrooms after rain. Climate ambition was temporarily overshadowed by energy security. In the long run, renewable energy might push more than compensate. Perhaps it doesn’t. To be honest, no one knows yet.

Most policy papers do not acknowledge the full extent of the cascade. Natural gas is necessary for nitrogen fertilizers. A significant portion of the world’s energy and fertilizer trade passes through the Strait of Hormuz. In the form of a slightly emptier sack of urea, a farmer in southern Punjab pays for a missile launched somewhere close to Isfahan even though he has never read a CEOBS report. That’s the part that stays. The carbon cost of war is measured not just in tons but also in food prices, yields, and the gradual decline of nations that initially contributed very little to global warming.

Reading the most recent evaluations gives me the impression that climate diplomacy is being asked to perform tasks for which it was never intended. A stable world was assumed by the Paris Agreement. The world became unstable. Net-zero will remain a beautiful but increasingly unattainable figure on a press release until military emissions are measured and pollution from conflicts is acknowledged as the structural force it truly is.