And the bill, according to analysts at the Center for Strategic and International Studies, is growing by roughly half a billion dollars every day. By day six, CSIS put the cumulative cost at $12.7bn. The opening hours of the war were dominated by some of the most expensive weapons in the American arsenal. Using cost analysis from the Center for Strategic and International Studies, we analyze where America’s war dollars are going, in a war that was never declared in the first place. View image in fullscreen Infographic of the cost of the first six days of the US war in Iran.

Source: The Guardian March 19, 2026 10:19 UTC