Poland Arrests Alleged Spy Working for Russia in Defense Ministry

Wsj • February 3, 2026

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The espionage case is among the most prominent to come to light inside the Polish government.

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Poland Arrests Defense Ministry Employee for Alleged Espionage for Russia A Polish defense ministry employee has been detained on suspicion of espionage activities for Russia. The individual, identified as Mateusz Piskorski, is also accused of spying for China, raising concerns about foreign intelligence operations within Poland's defense sector. 9 sources 35

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