Russia struck two military recruitment centres in separate drone attacks on Monday, Ukraine's military said, doubling down on a new campaign of strikes Kyiv says is aimed at disrupting military recruitment.

Ukrainian drone hunters searching through the debris of Russia's nightly assault on their cities found a drone that was different to the rest.

Russia's anti-aircraft systems downed 120 Ukrainian drones overnight, mostly in regions bordering Ukraine, the Russian Defence Ministry said on Sunday, reporting no damage. More than three years into the war,