Ukraine is guilty for the MH17 tragedy because it did not close the airspace over its territory after the start of the civil war in Donbas.
Recurring disinformation. There is no civil war in Donbas: Russia is supporting separatists in the eastern Ukraine. Read more here.
The governments of the states who lost most citizens in the catastrophe set up a Joint Investigation Team (JIT), which concluded that the plane was shot down by a BUK missile located in an area controlled by the Russia-supported rebels. Independent open source journalistic investigation traced the missile launcher and the people who operated it from Russia into Ukraine and back again into Russia, and the Joint Investigation Team has agreed with these conclusions. Read more: Flight MH17 three years on: getting the truth out of Eastern Ukraine