Russia is using a familiar tactic to blame an adversary for attacks it has not carried out - on this occasion accusing Ukrainian forces of blowing up a fertiliser storage facility.
The purpose of the attack, says Russia's defence ministry, was so that the Ukrainians could then accuse Russian forces of having launched a chemical weapons attack.
Russia also claims that the Ukrainian security forces have attempted to set up a second "false flag" event, by appealing for bodies to be used to "simulate a Russian air attack".
There's no evidence that either of these claims is true.