http://www.military.com/NewContent?file=NI...03&ESRC=navy.nl
It seems the Chinese are making major investments in their submarine fleet, both in a domestic made nuclear sub and by purchasing Russian diesel boats. They appear to be focusing on the ability to go after our carriers, as well as greater emphasis on the traditional role of balistic missle subs.
Interesting read for anyone who's interested ... more than a little disturbing, too.