Drones, once auxiliary to the war on the ground, have grown into a giant-slaying weapon in Ukraine’s arsenal over four years of ingenuity, writes James C. Reynolds

Ukraine just proved it can saturate Moscow’s air defenses and gut its oil supply. With 500 drones. The question now: what happens when the number gets higher?

Ukraine has intensified its drone attacks on Russia, setting fire to a major oil refinery in the south and killing at least two people, according to Russian authorities.

Drones, once auxiliary to the war on the ground, have grown into a giant-slaying weapon in Ukraine’s arsenal over four years of ingenuity, writes James C. Reynolds

Ukraine has markedly stepped up its long-range attacks on Russian military industries and energy facilities in recent months.

Ukraine has markedly stepped up its long-range attacks on Russian military industries and energy facilities in recent months, aiming to cut Moscow’s revenue for its invasion — now…