WASHINGTON, April 7 (Reuters) - Russia or pro-Russian elements are likely behind the leak of several classified U.S. military documents posted on social media that offer a partial, month-old snapshot of the war in Ukraine, three U.S. officials told Reuters on Friday.
"We are aware of the reports of social media posts and the Department (of Defense) is reviewing the matter," Pentagon spokesperson Sabrina Singh said.
One document posted on social media said 16,000 to 17,500 Russian forces had been killed since Russia's Feb. 24, 2022, invasion of Ukraine.
The United States believes that actual figure is much higher, at around 200,000 Russians killed and wounded, officials say.
Still, the document leak came as speculation mounts about what offensives Kyiv and Moscow might attempt in the war's second year.