3M-54 Kalibr.

This is coolbert:

I am not sure if there's any significance to any of this. It may well be that the Russian has expended every last single caliber missile that was on a Surface vessel in the Black Sea or environs thereof. 

"Russia removed all ships with 'Kalibr' missiles from the Black Sea"

From the Internet website "Ukrainian Truth" | Ukrayinska Pravda December 11, 2022.

As of the morning of 11 December, Russia has not deployed a single Kalibr cruise missile carrier ship in the Black Sea.

Source: Naval Forces of the Armed Forces of Ukraine on Facebook

Quote from the Naval Forces of the Armed Forces of Ukraine: "As of 11 December,  there are eight enemy ships on combat duty in the Black Sea; in the Azov Sea, the enemy continues to control sea communications, keeping two ships on combat duty."

Details: It is reported that nine Russian ships, including five carriers of Kalibr cruise missiles with a total salvo of 76 missiles, are in the Mediterranean Sea.

As is noted a number of Russian warships in the Mediterranean have a Kalibr missile capability but this would require them to fire their missiles from a standoff distance at long range against Ukrainian targets. And missiles over-flying NATO nations airspace in the process. Presumably such a violation of NATO airspace would be forbidden?

The Turk also during the time of the Ukrainian conflict will not allow Russian warships to transit from the Mediterranean into the Black Sea. Surface vessel reinforcement of the Russian Navy Black Sea Fleet with Kalibr missile firing capability is not possible. Or have these caliber missiles been fitted into submarines I cannot say with any degree of authority.

coolbert.