Last week, President Petro Poroshenko said Ukrainian security services had discovered that Russia directly orchestrated the killing of anti-government protesters in central Kyiv last February.
Petro Poroshenko, Ukrainian President: "The General Prosecutor's Office and Ukraine's Security Services have found a direct link to Russia's part in the shooting of Maidan protesters. Now investigators have access to the records of phone conversations between former President Yanukovych and Russia's Federal Security Service. Together they planned the shootings."
In response, Vladimir Putin said the claims that Russia was involved in the Maidan massacre were baseless.

20 Russian FSB agents suspected of Euromaidan Revolution crimes identified