Ukraine shares footage of Russian army using vacuum bomb

The Ukrainian Ministry of Defence has posted a video on Twitter showing what looks like an actual vacuum-bomb attack by the Russian army in the Donetsk region. Whether they only fired on military targets is not clear at the moment, but Ukraine says it is ready to take revenge: “Ukraine is ready to strike back. To do this, we need NATO-style MLRS. Immediately”. Or is this just a public announcement that they need more help?