no u.s. agency will speak on the record. a pentagon spokes pan s s pan s would be a concern if any country was tampering with internet cables. a spokeswoman says quote, the media is constantly whipping up hysteria trying to make russia look like the aggressor. she says it is not based on facts but assumptions. >> i know, brian, russia is pushing back but have become the more aggressive in the naval maneuvers recently, is that right? >> american naval forces says the operational tempo of vladimir putin's submarine force is increasing. russian submarine patrols has risen by 50% in the past year. there was an incident off sweden last year when the swedish navy was looking for a vessel which reported a distress signal in russian language. russians denied it was one of the subs and there is a strong