As the conflict in Ukraine continues, so too does Russian President Vladimir Putin's denial of any Russian involvement. But a recent report from think tank the Atlantic Council used open source information and social media to find evidence of Russian troops across the border.
Vice News: Selfie soldiers – Russia checks in to Ukraine
A Ukrainian serviceman stands guard, as flames erupt in the distance from a gas pipeline that was damaged as a result of shelling by pro-Russian separatists, near Avdiivka, Donetsk region, on June 12, 2015.