UPDATE 1-China "extremely concerned" by proposed U.S. challenge to claims
(Reuters) - China said on Friday it was "extremely concerned" about a suggestion from a top U.S. commander that U.S. ships and aircraft should challenge China's claims in the South China Sea by patrolling close to artificial islands it has built.
China's increasingly assertive action to back up its sovereignty claims in the South China Sea have included land reclamation and the construction of ports and air facilities on several reefs in the Spratly Islands.
The work has rattled China's neighbours, in particular U.S. ally the Philippines, and raised concern in the United States.
China says it has irrefutable sovereignty over the Spratly Islands and no hostile intent.
http://www.reuters.com/article/2015/09/18/southchinasea-china-usa-idUSL4N11O2RE20150918
