A Russian lieutenant's defection to Ukraine provided critical intelligence that resulted in the deaths of hundreds of Russian soldiers.

For months, a Russian lieutenant sent Ukraine his own unit’s positions, radio frequencies, and battle plans. Lev Stupnikov’s intelligence helped kill hundreds of Russian soldiers before he defected, The Wall Street Journal reports. https://meduza.io/en/feature/2026/10/19/a-spy-inside-russia-s-army-the-wall-street-journal-tells-the-story-of-the-lieutenant-who-helped-ukraine-kill-hundreds-of-his-fellow-soldiers

For months, a russian lieutenant sent #Ukraine his own unit’s positions, radio frequencies, and battle plans. Lev Stupnikov’s intelligence helped kill hundreds of russian soldiers before he defected, The Wall Street Journal reports. https://meduza.io/en/feature/2026/10/19/a-spy-inside-russia-s-army-the-wall-street-journal-tells-the-story-of-the-lieutenant-who-helped-ukraine-kill-hundreds-of-his-fellow-soldiers