Submarine Response to Pyotr Velikiy (Peter the Great)

These stories caught Juan's attention: Russia to send nuclear warship to Caribbean.

Perhaps because submarine launched autonomous underwater vehicles (AUVs) are available to the fleets in increasing numbers (such as, 154). The fully equipped AUVs sell for as little as US $100,000 and can perform data-gathering missions for six months. An unstealthy surface ship would cost more than $30,000 a day. Nuclear subs? More costly and best saved for hairy cat and mouse stuff. More here and here.

Submarines are always silent and strange.