U.S. Secretary of State Rex Tillerson said the two presidents "had extensive discussions around the risky situation in North Korea" and Xi "clearly understands, and I think agrees, that the situation has intensified and has reached a certain level of threat that action has to be taken".
U.S. secretary of state Rex Tillerson warned that the USA military strike on Syria is a message to other nations, as U.S. war ships headed towards waters near North Korea in a sign of escalating tensions between the two countries.
The China-US presidential summit, held at Mar-a-Lago in Florida on Thursday and Friday, failed to deliver any concrete agreement on how to rein in North Korea's nuclear and ballistic missile programmes between the two nations.
Originally scheduled to make port calls in Australia, the strike group - which includes the Nimitz-class aircraft supercarrier, the USS Carl Vinson - is now headed from Singapore to the Western Pacific Ocean.
White House national security adviser H.R. McMaster on Sunday characterized the decision to relocate a USA aircraft carrier strike group to the Sea of Japan as "prudent", given North Korea's "pattern of provocative behavior".
"If you violate global agreements, if you fail to live up to commitments, if you become a threat to others, at some point a response is likely to be undertaken", Tillerson told ABC's "This Week".
As a United States strike group led by an aircraft carrier steamed toward the Korean peninsula Sunday, a senior official said President Donald Trump has asked to be provided with a range of options for eliminating the North Korean nuclear threat.
In response to the attack made on Syria, North Korea said the attack was an "intolerable act of aggression against a sovereign state", and made it justified in "bolstering its own defenses".
A quarter-century ago, the US removed its nuclear forces from the Korean peninsula; should it choose to position them there again, it would mark the first overseas deployment of such weapons since the end of the Cold War. This is a rogue regime that is now a nuclear-capable regime. "That is not our objective and so the whole reasons underlying the development of a nuclear program in North Korea are simply not credible", Tillerson told the ABC program This Week.
The Carl Vinson strike group is moving toward the Korean peninsula amid heightened concerns that North Korea could soon conduct a major weapons test.
"North Korea has been engaged in a pattern of provocative behavior", Lt.
"They have indicated that they will, and I think we need to allow them time to take actions", Tillerson said. "It is important to maintain peace and stability on the Korean Peninsula by resolving the issues of North Korea's nuclear weapons and missiles wisely".
A US naval fleet moving toward the Korean peninsula has alarmed South Korean politicians, who warn Washington against any unilateral action targeting Pyongyang.
There was little doubt the missile strikes would be seen in Pyongyang as a message.
In an interview with CBS Sunday, Secretary of State Rex Tillerson said the presidents had "extensive discussions around the unsafe situation in North Korea".
"The U.S.is proving itself that it can really take action if you play with chemical weapons like Syria", Lee said.