"Honestly, I think the United States should be doing ... much more than now, so that there's real effective worldwide cooperation on this issue".
"We need to put more pressure on the Chinese and they need to recognize it's in their own self-interest to put more pressure on North Korea", Snow told FOX Business' Neil Cavuto on "Cavuto: Coast to Coast".
Asked what specifically the USA should do, Cui said "they should refrain from issuing more threats" and "do more to find an effective way to resume dialogue and negotiation".
Warning against putting China-US trade on the table during a reception celebrating Chinese National Day, Cui was further quoted by state news agency Xinhua as saying, "Efforts to undermine Sino-US trade, or even slapping sanctions on China, I think would be off-target".
However, Safari explained, if the conditions become critical, China will support North Korea, because it does not want to see the U.S. gain a foothold in its proximity.
The North's official Korean Central News Agency quoted leader Kim Jong Un as saying that his country has made strides in achieving nuclear and ballistic missile capabilities despite "limitless" worldwide sanctions, and it will forge ahead and complete the work.
China, which would be drastically affected if the USA were to cut trade ties with it (the U.S. imports about $40 billion in goods per month), said the measure would be "unacceptable" and "unfair", adding that Beijing can not be the sole player in resolving the North Korean crisis.
North Korea has threatened to sink Japan and reduce the USA to "ashes and darkness" for leading the latest UN Security Council sanctions imposed on the country.
The sanctions resolution imposed a ban on purchasing North Korean textile exports, capped exports of crude oil to Pyongyang, and required countries to stop providing new guest worker permits to North Korean laborers.
"Our final goal is to establish the equilibrium of real force with the United States and make the US rulers dare not talk about military options", Kim was quoted as saying.
Snow believes that a diplomatic solution can be reached without running the risk of a trade war with China.
US Ambassador to the UN Nikki Haley also repeated McMaster's position, saying that the North continues to be "provocative" and "reckless".
On Thursday, North Korea threatened to use nuclear weapons to "sink" Japan into the sea and reduce the U.S.to "ashes and darkness".
Pyongyang defends its military program as deterrence against a potential military action by the United States, which has a strong military presence in the neighboring South.