The missile cruiser "Moskva" sank while being towed to its destination in a storm due to damage to the hull received due to a fire from the detonation of ammunition. This was reported on Thursday in the Ministry of Defense of the Russian Federation.
I hope our Kremlin friends finally got their propaganda material on this unfortunate event and will share it in this thread. They've been weirdly avoiding this topic so far.
So far, I can only say that Russia's response will be asymmetric.