http://www.bbc.com/news/world-europe-27104904The low-quality, annotated images were handed to the Organization for Security and Co-operation in Europe on 16 April, as evidence that Russian "sabotage-reconnaissance groups" had been working with separatists in the Donetsk towns of Kramatorsk and Sloviansk.
According to a New York Times article, the photos and their descriptions were "endorsed by the Obama administration". Distributing the images, the US state department said they confirmed the "connection between Russia and some of the armed militants in eastern Ukraine".
However, the BBC has been unable to verify the pictures and there was no immediate response from the Russian government.