US navy chief does not want China tensions to 'boil over'

US navy chief does not want China tensions to 'boil over'
The US navy chief has said he did not want maritime tensions with China to "boil over", a week after Washington's latest challenge to Beijing's territorial claims in contested waters. Beijing said last week two American warships sailed near disputed islands in the South China Sea without permission, prompting the Chinese Navy to ask them to leave.