Russia’s president is implicated in their crime twice over. First, it looks as if the missile was supplied by Russia, its crew was trained by Russia, and after the strike the launcher was spirited back to Russia. Second, Mr Putin is implicated in a broader sense because this is his war. The linchpins of the self-styled Donetsk People’s Republic are not Ukrainian separatists but Russian citizens who are, or were, members of the intelligence services. Their former colleague, Mr Putin, has paid for the war and armed them with tanks, personnel carriers, artillery—and batteries of surface-to-air missiles. The separatists pulled the trigger, but Mr Putin pulled the strings............
http://www.economist.com/news/leaders/21608645-vladimir-putins-epic-deceits-have-grave-consequences-his-people-and-outside-world-web
Yes, this is all true. And what west are doing to prevent it from happening again? Putin reign supreme, he can do whatever he wants, I am still waiting for some embargo for Russian, without much hope. It is like before second world war when Hitler did whatever he want with no problems.
Where do you get all these 'facts' ?
As for supplying the pro-russian separatists with weapons.. the US/EU is doing the same with the pro-eu separatists