China and the U.S. have started talks on possible U.N. sanctions, but Beijing has not said it will support tougher steps against North Korea.
The isolated state says it's ready to respond to 'provocations' of the United States.
The comments came after U.S. bombers flew over South Korea in solidarity with its ally after Pyongyang's nuclear test.
Unilateral sanctions will not help resolve issues on the Korean Peninsula, Chinese Foreign Minister Wang Yi told his Japanese counterpart.
China has lashed out at the US after Washington accused Beijing of not doing enough to arrest NKorea’s nuclear ambitions.
Gordon Charlop, Rosenblatt Securities managing director, talks about what to watch in the last half hour of trading.
George Mitchell, former Senate Majority Leader, weighs in on North Korea's nuclear threat and pressuring China to intervene.
Former Senate Majority Leader George Mitchell talks about Russia's history with Syria, whether the world is safer since 9/11.
North Korea has reportedly geared up for another nuclear test, as experts warned new sanctions for the rogue state would likely fail.
Donald Trump says China has out-negotiated the U.S. and that he could solve the problem with North Korea in one day.
China might disapprove of North Korea's nuclear program but this is unlikely to stop the hermit state, says University of Denver's Christopher Hill.
North Korea is estimated to be within a decade of having a weaponized nuclear device, says Rodger Baker, VP of strategic analysis at Stratfor.
Xinhua says the international community must remain calm to prevent chaos or war on the Korean peninsula.
The Democratic People's Republic of Korea says it tested a miniaturized nuclear warhead on Friday.
CNBC's Eamon Javers reports the U.S. government is reacting to North Korea's nuclear test, saying it is a "serious provocation."
North Korea claims to have successfully tested it most powerful nuclear detonation ever.
CNBC's Sri Jegarajah reports on market reaction to North Korea claims it successfully launched one of its most powerful nuclear weapon.
North Korea said it tested a miniaturized nuclear warhead on Friday as protection against "threats and sanctions" from hostile elements.
China's Xinhua news agency, the mouthpiece of Beijing, quickly urged restraint over the "unwise" nuclear test by North Korea.
North Korea has picked up the pace of its missile and nuclear tests, as it regularly threatens to turn South Korea into a "sea of fire."