It is peacetime. The U.S. Navy cannot fire on or take other measures universally considered hostile (like having one of its own submarines flood their torpedo tubes) in order to drive a Chinese submarine out of its perimeter around a carrier.
Which is completely beside the point. The Navy didn't even know the sub was THERE until it surfaced...if the Chinese had been so inclined, they could have launched a spread of torpedoes at close range and might well have sank or hopleslly crippled an aircraft carrier and/or one or more of the escorts.
The US Navy is the premiere naval force in the world (at the present time). If THEY could be taken by surprise like that by the Chinese, what chance would the Royal Navy have?
The RN was orginally designed as a ASW centric force but as i was saying RN ships are generally worn out, too few, and too single purpose where as China is gearing up to build 10 frigates (modern, multi mission, and stealthy) a year
In regards to the earlier posts, there will NEVER be a time in the world where all needs on Earth are completely taken care of.
Not with with that attitude, at least...
I second that
Should the U.S. refrain from sending a manned mission to Mars just because people are starving in some flyspeck dictatorship in Africa?
Given that there are no discernable tangible benefits from such a trip and that there ARE tangible benefits to feeding the hungry, then the answer is a resounding "YES!"