2016-07-26 11:24 #0 av: ElLobo

Russia is expanding its use of undersea warfare in a broader strategy of coercion aimed at its neighbors, NATO, and the United States. Suspected territorial incursions in the Baltic Sea and provocative patrols in the North Atlantic have not only caused alarm among NATO and partner nations, but have underscored the extent to which U.S. and European antisubmarine warfare capabilities have atrophied since the end of the Cold War.

https://www.csis.org/analysis/undersea-warfare-northern-europe