Georgy Pirogov was sentenced to 23 years in a high-security colony for allegedly passing classified information to Polish intelligence. The verdict was announced the day after Poland said it had detained a Russian national suspected of planning a killing in Warsaw on the Kremlin's orders.

A judge in Moscow has sentenced a Russian man to 23 years in prison after finding him guilty of treason for allegedly spying for Poland, Russia’s FSB security service said Friday.

Georgy Pirogov was sentenced to 23 years in a high-security colony for allegedly passing classified information to Polish intelligence. The verdict was announced the day after…