Satellite pics will confirm if it was self inflicted or Ukrainian missiles.
The Russians are stating they are evacuating the full ships company and is being towed to port.
This is a big 40 year old ship with a crew of 500 so the damage must be significant.
Their declaration that their main armament is not affected is implausible as it has lost all propulsion and is on fire.
During the 90's our Royal Navy was on good terms with the Russian Navy due to the historical links including our Arctic convoys in WW2.
I spent a day on one of their 'relatively' modern destroyers and was rather shocked at what I saw.
Their NCOs and Officers were all clued up, but the crew also consisted of hundreds of conscripts who were dressed like street urchins and treated terribly by the NCOs
The ship's damage control / firefighting capability was shambolic as their strategy at the time was to go in, fire their missiles and get out. No strategy to stay afloat and fight.
So I am not surprised if a self inflicted fire got out of hand.
If it was x2 missiles, was the ship at suitable defence/action stations to counter a possible threat?
The feedback from the land war so far is that the ground troops went in rather arrogantly and was not prepared for a effective and bloody Ukrainian defence.
Maybe their Navy has the same attitude.
Champagne all round for the Ukrainians to take out the Russian Black Sea Fleet flagship (if they did
)