The Soviet Navy operated a research facility 44.5800°N 33.4023°E to explore military uses of marine mammals at Kazachya Bukhta, near Sevastopol. The Russian military is believed to have closed its marine mammal program in the early 1990s. In 2000, the press reported that dolphins trained to kill by the Soviet Navy had been sold to Iran.
Ukraine's spy dolphins switch allegiance to Russia
http://www.telegraph.co.uk/news/worldnews/europe/ukraine/10724506/Ukraines-spy-dolphins-switch-allegiance-to-Russia.html
Dolphin communication
http://67.55.50.201/lilly/dolphin01.html
Return of Dolphins to the Wild
http://67.55.50.201/lilly/interspeciesx.html