The United States, South Korea's principal ally both in the 1950-53 Korean War and in the continuing war of threats, has also welcomed the talks.
North Korean officials met their southern counterparts on Tuesday for the first such talks in two years. The Trump administration has previously sent mixed signals on its preconditions before beginning a dialogue with the regime.
However veteran nuclear launch officer, Dr. Bruce Blair, who founded Global Zero to eliminate nuclear weapons said he could no longer watch as President Trump "holds us all hostage to his petulant mood swings".
"You see that a lot with me and then all of a sudden somebody's my best friend", he said. Trump also again indicated he's open to direct U.S. talks with North Korea under the right circumstances. "I like it very much". "Does anybody really believe that talks and dialogue would be going on between North and South Korea right now if I wasn't firm, strong and willing to commit our total "might" against the North", he tweeted January 4.
He said: "President Trump has brought unprecedented diplomatic pressure to bare on the regime in Pyongyang".
"North-south relations are an internal affair of the Korean nation", the North's official news agency said in a report on the eve of the talks that stressed how Koreans north and south must not allow outsiders' "interference and tyranny" to keep the Korean nation divided. Russian Federation and China have joined in a series of U.N. Security Council resolutions sanctioning North Korea, and this slow squeeze is beginning to hurt. "Who knows where it leads".
He said Moon told him the talks went well, and added: "Hopefully it will lead to success for the world, not just for our country, but for the world".
Meanwhile, South Korea has already made headway to ensure it hosts the Winter Olympics without any diplomatic hiccups.
South Korea and North Korea marched together at the 2000 and 2004 Olympic Games opening ceremonies.
En route to South Korea, Pence will also travel to Alaska to review ballistic missile defense facilities, the White House said. Watch for all the soothsayers putting in their two cents or two won worth on the future of the Korean Peninsula, post-PyeongChang.
On Tuesday, North Korea agreed to send a delegation to next month's Winter Olympics in the South and to discuss easing military hostilities. On the most important issue of denuclearisation of the peninsula, North Korean delegation declined to engage.
Still, the Pentagon's moves send a signal that, even amid efforts to dial back tensions, the US remains "ready to fight tonight" if necessary, Pentagon spokeswoman Dana White said Thursday, invoking a slogan of American forces in South Korea.
Taking part in cultural activities such as the Olympics costs North Korea nothing, but gives it a sheen of respectability. "That is our basic stance, and that will never be given up".
"We and our nation can not abide being hostages to the mood swings of a petulant and foolish commander-in-chief".
Kim Jong-Un and Donald Trump appear on a South Korean TV screen.
"To hold a summit, the right conditions must be created and certain outcomes must be guaranteed", he said.
The development of North Korean nuclear weapons is intolerable for Washington.
They claim rising rhetoric against North Korea highlights the clear flaw in the process that could endanger millions around the world - that there are no checks on the President should he decide to order a nuclear strike.