New Delhi, Feb. 12 -- Russia's full-scale invasion of Ukraine began in February 2022, and as the conflict heads into its fifth year, the battle is not just limited to front lines. Ukrainian intelligence officials are now warning of a growing espionage campaign, with Russia's intelligence agency recruiting Ukrainians to gather sensitive information.

According to a CNN report, Russia's main intelligence agency, the Federal Security Service (FSB), has recruited several Ukrainians, who, in the past, have shared information about the locations of the Ukrainian military personnel and equipment in Pokrovsk, which is considered to be a strategic hub.

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