Nighttime assaults on the Ukrainian capital of Kyiv have intensified in the fourth year of Russia's full-scale invasion, with the number of drones sometimes exceeding 700. Swarms of 1,000 drones could soon become the norm,

Russia pounded Ukraine's capital with another major missile and drone attack overnight into Thursday, killing at least two people and causing fires across Kyiv a day after the heaviest drone attack so far in the more than three-year war,

While Russia has ramped up its airstrikes against Ukraine in recent weeks, the scale and approach of the latest overnight attack appear to mark a change in strategy, according to the report. CNN said drones were flying at various altitudes and converging on the capital from every direction.

A senior Ukrainian security officer was gunned down in a residential parking lot in Kyiv on Thursday before his assailant fled on foot in broad daylight, according to authorities and video footage verified by Reuters.

A senior Ukrainian intelligence officer was gunned down in broad daylight in Kyiv, officials said on Friday as a maternity hospital was hit by a Russian drone barrage on the city of Kharkiv. Surveillance footage published on social media showed the agent was executed in a car park by a gunman clad in dark clothing who fled the scene.