From this post: China expanding submarine fleet
According to US and Taiwan intelligence estimates, China has about 70 submarines (virtually all conventional), it is building more and buying more from Russia. It has one nuclear submarine, two more being built and eight Kilo-class diesels on order from Russia, to be delivered in 2005 (Russian sources) or 2007 (Chinese sources).
And from this one: Indian Navy to lease Russian N-submarine(Akula-II)
MOSCOW: India is to lease a multi-role nuclear submarine from Russia for 10 years under a deal signed earlier this year, according to the defense industry sources.
Looks like there are a lot of Russian subs now used by other countries. Could be that the other countries' crews are suffering from inexperience or overconfidence with their new toys. Just a thought.
Then again, boys will be boys, and they do like to play 'Tag'. (Sometimes we play rougher than others, heheh.)
Perhaps. If so, expect the UN to issue new undersea regulations that hamper operations by the USN and HRN shortly to "level the playing field".