Here is exactly where Barbra Star CNN reporter asks Adm Foggo the question about Russia Sub
https://www.c-span.org/video/?c4753837/foggo-cnn-question
"Russia is not 10 feet tall but they do have capabilities that keep me vigilant, concerned"
ends with
"Do i think they would do something like that? No I think they would be foolish"
"We hold an accoustic advantage and we will continue to do that, our boats are the best in the world"