MOSCOW 

The Russian Defense Ministry said on Monday that last night it carried out a mass strike against the Dubno airbase in Ukraine's Rivne region, which was hosting tactical aviation aircraft.

The ministry said in a statement it used precision-guided long-range airborne weapons in the strikes in response to "terrorist attacks" perpetrated by Kyiv against Russian military airfields.

In addition, strikes were carried out against enterprises producing weapons and military equipment, assembly shops for strike drones, and ammunition, weapons, and military hardware depots, it added.

"Objectives of the strikes have been achieved. All assigned targets have been hit," the ministry said.

On June 1, Ukraine's security services announced that they carried out an attack against Russia's strategic air forces and damaged more than 40 Russian military aircraft, including heavy bombers A-50, Tu-95, and Tu-22 M3, capable of carrying nuclear arms.

Meanwhile, the Russian forces advanced along the entire frontline, the Russian Defense Ministry statement read.

Ukrainian President Volodymyr Zelenskyy separately said that, according to Commander-in-Chief Oleksandr Syrskyi's report, the situation in the Donetsk region, as well as along Ukraine’s border in the Sumy and Kharkiv regions "is very difficult."