Russia was aware of Western involvement in Ukraine even before the documents were leaked online, Dmitry Peskov repeated

Russian responds to leak of ‘secret’ NATO war plan

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Ukraine War Plans Leak Prompts Pentagon Investigation (Archived)

Classified war documents detailing secret U.S. and NATO plans for building up the Ukrainian military before a planned offensive against Russia were posted this week on social media channels, senior U.S. officials said.

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U.S. officials were working to get them deleted but had not, as of Thursday evening, succeeded.