As snow fell in a wooded area of Ukraine, the long-range attack drones accelerated one by one down an unlit, abandoned road and their whirring engines propelled them into the night sky.

Ukraine has intensified missile and drone strikes on Russia. Russian air defenses are stretched, prompting efforts to find other approaches to protect domestic targets.

The war in Ukraine has entered a dangerous new stage. What began as a conflict fought mostly on Ukrainian soil has expanded, with attacks now reaching deeper into Russian territory. As both sides adjust their strategies,