"The forces and means of the Black Sea Fleet began to monitor the actions of the frigate Cristobal Colon of the Spanish Navy, which entered the Black Sea at 15:00 on March 12, 2021," TASS reports.

At the end of February, the Black Sea Fleet followed the minesweepers of the Spanish and Greek navies in the Black Sea.

NATO Secretary General Jens Stoltenberg said that the alliance has strengthened its presence in the Black Sea in response to Russia's actions in the region.