Ukrainian President Volodymyr Zelensky said in February that Kyiv would create a new branch of Kyiv's military, known as the Unmanned Systems Forces, dedicated exclusively to drone warfare. "Drones, unmanned systems, have proven their effectiveness in battles on land, in the sky and at sea," the Ukrainian leader said.

Ukraine's air defence has been responding to Russian drones in Kyiv Oblast on the night of 27-28. Source: Kyiv Oblast Military Administration; Kyiv City Military Administration Quote: "Enemy UAVs were detected in the airspace.

Officials say Sumy's hospital was hit in the morning, and was struck again as rescuers were evacuating people.