https://www.google.com/amp/s/tass.com/defense/1441959/amp
Russian news says that it sank while being towed.
Lies and disinformation all part of asymmetric warfare.
...but even TASS reported that the Moskva sank:
I watched the speech (with subtitles) and, later, read the speech.
In asymmetric warfare, in which disinformation is necessary, trust no one. Everyone and everything they say must be scrutinized and measured against their actions.
Like Putin.