LONDON -- Russia and Ukraine exchanged large waves of attack drones overnight into Sunday as the two combatants maneuvered ahead of Friday's planned summit in Alaska between U.S. President Donald Trump and Russian President Vladimir Putin.

Drones operated by Defence Intelligence of Ukraine were behind an attack on the LUKOIL-Ukhtaneftepererabotka oil refinery in Russia's Komi Republic, located 2,000 km from Ukraine. Source: Ukrainska Pravda sources in Defence Intelligence of Ukraine (DIU) Details: DIU struck the LUKOIL-Ukhtaneftepererabotka refinery as part of a special operation on 10 August,

One person was killed, and several apartments and an industrial facility were damaged in a Ukrainian drone attack on the south Russian region of Saratov, the governor said on Sunday. Roman Busargin posted on the Telegram messaging app that residents were evacuated after debris from a destroyed drone damaged three apartments in the overnight attack.