That Soviet naval units shadow US aircraft carrier battle groups is common knowledge, but no less dangerous for that, Those tattletales provide the Soviet Navy with continuous, accurate information on the position of our carriers the repositories of most of the conventional striking power of the US Navy. The tremendous concentration of power in only twelve carriers makes them extremely lucrative targets in wartime.
Gilchrist, Stanley F.
"The Cordon Sanitaire-Is. It Useful? Is It Practical?,"
Naval War College Review: Vol. 35
, Article 8.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol35/iss3/8