Rbth.Στο ρωσικό ναυτικό νέο υποβρύχιο

http://rbth.com/defence/2017/04/03/the-russian-navy-unleashes-its-most-powerful-and-expensive-attack-sub_733357http://rbth.com/defence/2017/04/03/the-russian-navy-unleashes-its-most-powerful-and-expensive-attack-sub_733357