Kathleen H. Hicks & Andrew Metrick 
Undersea Warfare in Northern Europe [EPUB ebook] 

In this report, the CSIS International Security Program analyzes Russian undersea intentions and capabilities in the near to mid-term and the ability of NATO and partner nations to respond effectively. The assessment identifies gaps in current Western organizations, capabilities, and posture and offers recommendations as to how NATO and partner nations can meet the Russian challenge in the undersea domain.