China denies making preparations for collapse of North Korea regime
The Guardian, May 6, 2014
http://www.theguardian.com/world/2014/may/06/china-denies-preparations-collapse-north-korea
After Obama visit, planned naval drills with Russia reported
中俄海军联合演习威慑美国
The New York Times, May 5, 2014
http://cn.nytimes.com/china/20140505/c05naval/dual/