As said on my previous post, loosing one of the three Slava class ships, which do have quite decent defences in place, in which seems like a well though, but frankly not too complex attack (a couple of sub-sonic missiles and, what appears to be some minor distractions) goes beyond a simple local success. For me it may (I am saying may) reveal:

a) The US intelligence service is collaborating with Ukraine to a very large extent, even when planning strategies and tactics.
b) The US intelligence service has in-depth understanding of the naval defence systems on Russian Navy and seems to have analysed their weaknesses perfectly.
c) Putin cannot put any short of faith in a sea launched attack or support.

There are a number of news that may still be awaiting Putin's troops. The last shipment of US aid was undisclosed in content and the training of Ukrainian troops in new tactics may bring very nasty surprises with it.

On regards to Mariupol, the Azovstal installations are like a city inside a city. There is a network of tunnels and hidden storages that make a frontal assault nearly impossible. Shelling has also a limited effect and only the Ukrainians know how many reserves may they hold. Eventually it may fall, but it may consume time an resources at large.

As for the soldiers, the ones in there are not the type of soldiers that expect anything better than death from Putin's psychos.