"Russia blames US for deadly missile attack on ‘peaceful residents’ in Crimea"
"The attack on Russian-annexed Crimea, killed 5 people, including 3 children, Moscow said, and used US-supplied ATACMS missiles"
Note: It's difficult for this to happen by accident.
Artillery to hit wrong people on moving battlefield? OK that's easy.
But ATACMS missiles are high-tech, targeted carefully under USA control, at fixed remote location.
Russia Foreign Ministry says:
“All flight missions for American ATACMS missiles are programmed by American specialists based on their own US satellite intelligence data.
Therefore, the responsibility for the deliberate missile strike against the civilian population of Sevastopol lies primarily with Washington, which supplied this weapon to Ukraine, as well as with the Kiev regime, from whose territory this strike was launched.
Such actions will not go unanswered.”
In other words: Accident is just unlikely enough, for Russia to not believe it.
Let's hope neither side escalates.