As Ukrainian drones strike deep into Russian territory, they are disrupting day-to-day life and reminding Russians that the war is not confined to the trenches.

Ukraine's military launched what has been described as the largest drone assault on Russian territory since March.

Russian drone strikes on Kyiv and Kharkiv result in injuries and significant damage, with fears of further attacks looming.- Watch Video on English Oneindia

The Kremlin that its air defenses shot down 485 drones across 14 regions in its control. Several reports indicate other drones found their targets.

Timur Tkachenko, head of the city's military administration, said four people requested medical aid after a five-storey apartment building was struck in the Holosiivskyi district just outside the city centre.

Ukraine pioneered the use of small drones on the battlefield. But in Russia’s Kursk region, Moscow’s fiber-optic cables helped turn the tide.

Russia battered Ukraine overnight with its largest drone attack since the war began, Ukraine’s military said Sunday, ahead of an expected phone call between US President Donald Trump and Russian President Vladimir Putin on ending hostilities.

Russia fired 273 exploding drones at multiple regions of Ukraine after President Donald Trump announced he would be speaking with Vladimir Putin on Monday.

Russia's Migalovo Air Base in Tver Oblast came under attack by drones overnight on May 25, the Russian independent news channel Astra reported. Locals reported that drones were targeting the air base and that explosions occurred in the area.