12 December 2025

The awful arithmetic of our wars

Peter W. Singer

At the lowest point of the Civil War, Abraham Lincoln characterized the core factor between victory and defeat as finding a general who understood the “awful arithmetic” of war. War is a contest of blood and treasure; each can, and must, ultimately be counted and measured. It has been the same for every conflict before and after.

Yet this arithmetic is constantly changing, and never faster than right now. If the United States cannot update its calculations to properly reflect our new era, our failure will not just cost us blood and treasure, but will drive us toward defeat.

Cost imposition has long been a tenet of U.S. strategy. During the Cold War, the U.S. launched expensive programs such as stealth and Star Wars not just for their tactical value, but to send a strategic signal to the Kremlin: neither your economy nor your war machine can keep up. Gorbachev, persuaded, gave up the decades-long competition with the U.S.

The very same concept of cost imposition was also elemental to the most celebrated operations of the past year. In Operation Spider’s Web, Ukraine used inexpensive drones, reportedly costing less than $500 each, to damage strategic bombers worth many millions of dollars, degrading Russia’s long-range strike capabilities for years to come. Similarly, in Operation Rising Lion, cheap Israeli drones took out Iranian surface-to-air missiles and radars, paving the way for the destruction of command and nuclear facilities worth tens of billions of dollars. In each, the tactical became the strategic through new operational concepts that leveraged the new math of new technologies.

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