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, transmits The New York Times.
The Pentagon is investigating who may have been behind the leak of the documents, which appeared on Twitter and on Telegram, a platform with more than half a billion users that is widely available in Russia.
Military analysts said the documents appear to have been modified in certain parts from their original format, overstating U.S. estimates of Ukrainian war dead and understating estimates of Russian troops killed.
The modifications could point to an effort of disinformation by Moscow, the analysts said. But the disclosures in the original documents, which appear as photographs of charts of anticipated weapons deliveries, troop and battalion strengths, and plans, represents a significant breach of U.S. intelligence in the effort to aid Ukraine.
U.S. officials were working to get them deleted but had not, as of Thursday evening, succeeded.
“We are aware of the reports of social media posts and the department is reviewing the matter,” said Sabrina Singh, the deputy press secretary at the Pentagon.