The reclusive North, which has defied all calls to rein in its weapons programs, even from its lone major ally, China, has been working on a missile, mounted with a nuclear warhead, capable of striking the U.S. mainland.
The U.S. president went onto say that he "looks forward the outcome of working in close cooperation with President Moon to resolve the North Korea issue in the future", according to Hong.
"The South Korean authorities have to draw a serious lesson from the wretched fate of traitor Park Geun-hye", the KCNA reported in English Thursday, "who met a miserable end while vociferating about "nuclear threat from the North" and going keen on hurting the fellow countrymen with the help of outsiders that only think [of] inflicting nuclear disaster on the nation".
He added that this is in line with Moon's statement at a Sunday meeting of the South Korean National Security Council that dialogue is possible only if and when there is a change in North Korea's behavior.
North Korea's ambassador to Iran accused the intelligence agencies of the United States and South Korea of attempting to launch a biochemical attack against Kim Jong Un.
At the Pentagon, Defense Secretary Jim Mattis said the missile test showed North Korea isn't heeding cautions from the worldwide community.More news: Scottish NHS health boards escape major cyber disruptions
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President Trump is open to exploring engagement with North Korea under certain conditions, South Korea's foreign ministry said. "So our effort is to work with the United Nations, work with China, work with Japan, work with South Korea to try to find a way out of this situation".
Seoul and Washington have argued that the missile system is aimed at North Korean aggression, while China sees it as a threat to its own security because its radar can peer deep into northeastern China.
North Korea's missile program is progressing faster than expected, South Korea's defense minister said on May 15, hours after the UN Security Council demanded the North halt all nuclear and ballistic missile tests and condemned Sunday's test-launch.
The usually aggressive Russian Federation leader took a diplomatic approach, urging other parties to stop antagonising the despot nation.
In recent weeks Beijing and Seoul have signaled a desire to fix relations following the election of Moon, who has taken a friendlier stance toward China than his conservative predecessor.
Hong, chairman of the Korean Peninsula Forum and a former US ambassador, led the Korean delegation to Washington Wednesday, the first meeting of an envoy of the new Moon administration with Trump. Although he has sometimes criticized the THAAD deployment, Moon has not said he will remove it. "Seoul needs to make a choice between deploying THAAD and resuming Sino-South Korean relations".