Dutch Prime Minister Mark Rutte chats with Chinese Premier Li Keqiang during the Asia-Europe Meeting (ASEM) summit just outside Ulaanbaatar, Mongolia, July 16, 2016.
"But since certain countries commented on the issue, it is thus necessary for China to come out to clarify its stance and spell out the truth", he said.
The court ruled last week in favour of the Philippines against China with its clarification relating to the claims in disputed areas in the South China Sea.
In response to the other threats, China said it would decisively respond to anyone who threatens its security interests in the South China Sea.
China has refused to recognize Tuesday's ruling by an arbitration court in The Hague invalidating China's vast claims in the South China Sea and did not take part in the proceedings. "China has no claim over the South China Sea".
Ei Sun Oh, principal adviser of Malaysia-based think-tank Pacific Research Centre, also said that he does not rule out the possibility of Vietnam seeking a similar arbitration, emboldened by the favourable ruling the Philippines received.
"Then I suppose there may be other ways of doing it, diplomatic... diplomatic channels", he said.
The agenda for Richardson's meetings will include discussions on the South China Sea, the ongoing Rim of the Pacific (RIMPAC) exercises off Hawaii and the southern California coast, and future opportunities for the two navies to operate together, the Navy said.
A US State Department spokesman earlier in the week described the United Nations ruling as "final and legally binding", while Australian Foreign Minister Julie Bishop said Beijing risked reputational harm if it ignored the decision.
Speaking on The Nation, China's ambassador to New Zealand Wang Luton admitted China already has military installations on the atolls where it has reclaimed land.
Why is the South China Sea important?
In the case brought by the Philippines, the court ruled on Tuesday that Beijing's claim to 85 percent of the sea violated Manila's economic and sovereign rights under the 1982 U.N. Convention on the Law of the Sea.
The Philippines filed a complaint against China in 2013, accusing China of interfering with fishing and thereby violating global laws. Similarly, the Philippines 's Foreign Minister Perfecto Yasay Jr.at the summit discussed the need for all parties to respect the recent decision of the PCA.
To add to that, Secretary of State John Kerry also warned China against putting up an ADIZ or Air Identification Zone in the South China Sea.
Philippines President Rodrigo Duterte ended his unusual silence at a private function late on Thursday and said he wanted a dialogue with China and was considering sending former president Fidel Ramos to Beijing.