An F-16 fighter jet given to Ukraine reportedly shot down an advanced Russian plane thanks to the assistance of a Swedish reconnaissance aircraft. German newspaper Bild said the Russian Sukhoi Su-35 jet had been downed in the northeast of the country in an operation it described as a "historic first.

Ukraine's president says a new prisoner exchange with Russia is ongoing and will take days, as both sides continue launching hundreds of attack drones.

Russia and Ukraine recently agreed to exchange more prisoners and to return the bodies of 12,000 dead soldiers.