Polish Prime Minister Donald Tusk has accused Russia of planning acts of sabotage worldwide including “acts of air terror” against airlines.

The pro-European Union government in Warsaw says Russia is pursuing acts of hybrid war against Poland and other Western countries in retaliation for their support of Ukraine.

The Kremlin said on Thursday that an allegation by Polish Prime Minister Donald Tusk that Russia had planned "acts of terrorism" in the air against Poland and other countries was completely unsubstantiated.

During the ongoing Russia-Ukraine war, Russia has often been accused of violating the airspace of its neighbouring countries like Poland and Romania (both NATO members), when carrying out missile and drone attacks targeting the western regions of Ukraine.

NATO member Poland scrambled fighter jets after overnight Russian missile and drone attacks on Ukraine, Warsaw's military said on Wednesday. A spokesperson for the Operational Command of the Polish Armed Forces told Newsweek that "intense long-range aviation activity" from Russia had been detected early on Wednesday.

The Ukrainian energy minister says Russia has launched a massive aerial attack against Ukraine, forcing the country to introduce preventive power cuts