Despite that, Pyongyang has continued developing its nuclear and weapons program.
President Trump meanwhile, is at his private golf resort in New Jersey for a 17-day vacation, but held discussions with his top aides and cabinet members regarding North Korea.
But it was not immediately clear if Ri planned to meet ministers of other countries in Manila.
China is providing a welcome boost to the global campaign to pressure North Korea to halt its missile and nuclear tests.
ASEAN's problem in agreeing the wording highlights China's growing influence at a time of uncertainty over the new US administration's policy on the South China Sea and to what extent it will contest China's assertiveness. Pentagon spokesman Jeff Davis said the USA was "actively" considering South Korea's request to double the maximum payload limit on its missile warheads, from the current 500 kilograms to one ton. She says in the past, there's been a pattern in which China complies with sanctions after a North Korean provocation, but then slips back over time. He says he won't give a concrete timeframe but that the USA will "know it when we see it". She says the USA rejects any "moral equivalency" implied by that proposal. The new measures were a response to five nuclear tests and four long-range missile launches.
Meeting Japanese Foreign Minister Taro Kono on the sidelines of a regional security forum in Manila on Monday, Wang urged Japan to respect the efforts of China and ASEAN countries and play a more constructive role for regional peace and stability. He says he told Ri "do not violate the United Nations decision or provoke the worldwide community's goodwill by conducting missile launches or nuclear tests".
After weeks of US frustration over China's reluctance to take action, Trump's strategy of relying on Beijing's help showed early signs of paying off.
The new UNSC's sanctions include the full ban on the export of coal, iron and iron ore from the North Korea.
The Pentagon said on Monday that it was reviewing bilateral ballistic missile guidelines with South Korea that could allow Seoul to have more powerful missiles as tensions with North Korea rise over its missile and nuclear programs. South Korean Foreign Minister Kang Kyung Wha expressed hope the two could talk.
On Tuesday, the state-run China Daily cited unnamed sources as saying Vietnam had tried to hype up the reclamation issue in the communique, pointing out that Vietnam has accelerated its land reclamation in the South China Sea.
Kang is echoing Tillerson's praise for the sanctions approved Saturday by the U.N. Security Council. Tillerson described it as "a good outcome" and Kang weighed in, adding that "it was a very, very good outcome". Kang is thanking the US for consulting with South Korea on the sanctions.