Sauce?
https://www.nytimes.com/2018/08/31/world/europe/ukraine-separatists-bombing.html
The leader of the Donetsk People’s Republic, a Russian-backed separatist enclave in eastern Ukraine, was killed on Friday when a bomb exploded at a restaurant where he was having dinner
Early theory is the "Globalists" did it to attempt to force NATO and Russia into a war.