In the last few days, Russian military vessels have attacked and sunk Georgian naval vessels. However those Russian ships are based in Sevastapol- under the remit of an agreement with the host nation: Ukraine.
Ukraine does not support the use of its ports in a vicious war against a friendly country. It has indicated that it will not permit those ships that participated in the action to return to Ukrainian ports.
If Russia intends to break the blockade, then it will essentially be attacking Ukraine in the same way as it has already attacked Georgia.
This is playing with fire.
The rape of Georgia has already humiliated the West and killed tens of thousands.
Unless the Kremlin pulls back from the brink, we could indeed be looking a a major war.