"The forces and means of the Black Sea Fleet began to monitor the actions of the British Navy patrol ship Trent, which entered the Black Sea on March 16," TASS reports.

On May 11, the Black Sea Fleet began observing a ship of the French Naval Forces, which entered the Black Sea.

On April 27, it was reported that the forces of the Black Sea Fleet were monitoring the US Coast Guard patrol ship Hamilton, which entered the Black Sea.

On May 15, a US patrol ship left the Black Sea.