sabotage
Polish Foreign Minister Sikorski accuses Russia of hybrid attacks, threatens to expel ambassador
Daring Ukrainian covert mission sparks flames at Chelyabinsk airfield in Russia
Suspects of espionage for Russia to be tried in Poland, says prosecutor general
Undercover Ukrainian agent amasses documentation of crimes by Russian forces before dying
Sweden aiming to conclude investigation into alleged Nord Stream sabotage by end of 2023
Saboteurs blew up planes, helicopter at Russian ‘doomsday’ airbase, Ukraine says
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