When you look at how these bands of supposed separatists were able to take over a Buk missile system, were able to get their hands on the most sophisticated Russian military equipment to shoot down flight MH17 because they had mistaken it for a Ukrainian military plane, and you have hundreds of high-tech tanks in Ukraine, it's very clear that this is financed and organized by the Russian Federation.
On October 23rd, 2017. See this statement in context.