us-navy-impressed-new-russian-attack-boat

http://news.usni.org/2014/10/28/u-s-navy-impressed-new-russian-attack-boat

http://www.governmentsecrets.com/robots-drones-boost-russian-5th-gen-nuclear-subs-arsenal

2011-11-9
http://bmpd.livejournal.com/105985.html

http://en.wikipedia.org/wiki/Yasen-class_submarine

http://en.wikipedia.org/wiki/Severodvinsk#Modern_city

http://en.wikipedia.org/wiki/Russian_submarine_Severodvinsk_K-329

http://en.wikipedia.org/wiki/Typhoon-class_submarine