Numerous other news organizations, including Reuters, had also sought to cover the shutdown of the North's nuclear test site but were denied invitations to visit the country.
The meeting comes as reporters travel by plane from Beijing to North Korea to witness the dismantling of the Punggye-ri nuclear test site, which North Korea has said will take place between May 23 and 25.
Moon sent his own national security advisor to the White House in March, carrying an offer of talks and word that North Korea may be willing to abandon nuclear weapons, an enticing prospect. CBS News is the only US broadcast network in North Korea to witness the shutdown of the Punggye-ri site in the northeast of the coutry. The South's Yonhap news agency reported the North refused to accept a list of the reporters on Monday, making it "technically hard' for the South Korean media to join the event".
"Realistically, it seems hard for the South Korean journalists to enter [North Korea] via Beijing today", said the official.
Pyongyang has said it would hold a ceremony to mark the closure between Wednesday and Friday, depending on the weather, and that journalists from China, Russia, the US, Britain and initially South Korea would be allowed to watch.
South Korean President Moon Jae-in, a champion of talks between the US and North Korea, will look to restore momentum for an unprecedented summit between the foes in a White House visit on Tuesday.
"Nonetheless, we note that the dismantlement of the Punggye-ri nuclear test site, a measure toward denuclearization that has been promised by the North, is proceeding as planned", said Cho, "and we look forward to the North-U.S. summit to be held successfully through North Korea's action".
Kim Kye Gwan directly criticized the model in a lengthy statement last week, accusing US officials of "provoking" the country with "unbridled remarks".
Moon Jae-in jets into Washington on a mission to salvage a rare diplomatic opening between the U.S. and North Korea that is in trouble nearly before it begins. Reporters were also dissuaded from speaking to North Korean embassy officials or guards.
"The North Koreans delayed it but when the need arises, they will resume dialogue with the South, though now they are teaching them and others a lesson", the expert noted. They chose to return to Seoul. It has railed against the ongoing "Max Thunder" military aviation exercise involving the United States and South Korea, calling it "an act of provocation".More news: Pompeo says 'bad deal' with North Korea 'not an option' for US
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"I think a lot of people who were involved with the Roh administration are concerned about Bolton because he was such a neoconservative at the time, and it seems that he hasn't changed", said Dr Lee Geun, a professor of political science at Seoul National University.
In 2008 the government blew up a cooling tower at its atomic reactor at Yongbyon, the facility that produced the plutonium that allowed North Korea to carry out its first successful nuclear test.
They indicated that they paid around $160 and that the expenses were similar to any other business trip.
"China would be stupid to violate United Nations resolutions just to support North Korea", he said. The two countries are traditional allies, but their relationship was strained over North Korea's nuclear and missile tests and China's enforcement of United Nations sanctions that have choked the North's economy, especially fuel.
Moon has always been a driving force behind the diplomacy between the United States and North Korea, and personally encouraged Trump to meet with Kim.
However, the improving diplomatic environment has hit a rocky patch, with North Korea threatening last week to pull out of a planned June 12 summit in Singapore between leader Kim Jong Un and U.S. President Donald Trump.
Just weeks after Kim declared a "new history" and an "era of peace" at an April summit with Moon, Pyongyang abruptly canceled high-level talks with Seoul.
The North's official media slammed the drills again on Tuesday.
A U.S. Air Force F-16 fighter jet prepares to takes off from an airbase in Pyeongtaek, South Korea, May 16, 2018.