Russian President Vladimir Putin said on Thursday that drones had played a major role in the conflict in Ukraine and called for the rapid development and deployment of separate drone forces within the military.

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.

Ukraine hit the "bold target" of a microelectronics plant close to Moscow's city center, a Ukrainian official said on Thursday.

At least 10 Ukrainian drones were shot down on their approach to Moscow overnight into Sunday morning, according to the city's mayor.

The Ukrainian military says its new weapon system, which launches antiaircraft missiles from a remote-controlled speedboat, has brought down two Russian jet fighters.

Trump declined to say what those consequences would be, and went on to add that he had not had discussions about whether to investigate Musk.