The war in Ukraine has become the world’s first large‑scale test of artificial intelligence in modern combat. From AI‑guided drones to real‑time battlefield algorithms, technology—not manpower—is reshaping how wars are fought and won.  Three days—that’s how long many experts and politicians believed Ukraine would last when Russia launched its invasion four years ago. Yet despite daily missile and drone attacks and tens of thousands of casualties, Ukraine continues to resist Russian aggression.