The awful arithmetic of our wars

A new analysis warns that the U.S. is losing ground on the modern battlefield—not for lack of power, but because its cost calculations no longer add up. As warfare shifts toward cheap drones and low-cost munitions, adversaries are inflicting damage at a fraction of what the U.S. spends to respond. The gap is widening fast. From drug cartels in the Caribbean to Russian drone swarms over Europe, the numbers point to a troubling conclusion: unless America adapts to the new arithmetic of war, even tactical wins could become strategic losses. Peter W. Singer with Defense One has the full story.