Two people were killed and 35 others were injured after a Russian drone attack struck a military hospital and shopping center in Ukraine late Saturday night, Ukrainian officials say.

Month after month, Ukraine has increased the size and scope of its drone assaults within Russia despite the war's strategic pressures.

Ukraine accuses Russia of war crime in Kharkiv attack, as ceasefire efforts remain elusive amid deadly strikes.

These strikes are not just attacks on Ukrainian civilians, but also on all international efforts,' says Ukraine's president - Anadolu Ajansı

The strike sparked a large fire in a hotel and restaurant complex and other buildings, the regional governor said.

It also wrecked a razor-wire barrier Ukrainian forces had erected to slow down Russian attacks. As one Ukrainian blogger pointed out, the Ukrainians swiftly repaired the barrier breach—apparently by deploying one of their razor-wire-hauling ground robots.

Russian soldiers were snug in their sleeping bags, sleeping off a hard day of combat in a building presumably somewhere along the front line in eastern Ukraine when their slumber was interrupted. An explosive first-person-view drone operated by the elite Birds of Magyar unit slipped into the building—and struck the snoozing Russians,

A Ukrainian soldier told Business Insider that the Backfire drone is the "golden ratio" of cost, reusability, payload, and range.