Read also: Russia patrols Black Sea with submarines “This marks a significant turning point because the Russians consider it a safer area compared to the Black Sea,” Pletenchuk said. The effectiveness of Kalibr missiles is not what it was at the beginning of the full-scale invasion, he said. The Ukrainian Armed Forces (AFU) “know what to do with them,” Pletenchuk said. Read also: Russia patrols Black Sea with submarines There is one Russian submarine in the Black Sea that could carry four missiles, he said. Three missile carriers in the Sea of Azov could have up to 20 missiles on board. The Na…