North Korean leader Kim Jong Un takes part in the 4th Plenary Meeting of the 7th Central Committee of the Workers' Party of Korea (WPK) in Pyongyang in this April 10, 2019, photo released April 11, 2019 by North Korea's Korean Central News Agency.
North Korean leader Kim Jong Un takes part in the 4th Plenary Meeting of the 7th Central Committee of the Workers' Party of Korea (WPK) in Pyongyang in this April 10, 2019, photo released April 11, 2019 by North Korea's Korean Central News Agency.

SEOUL, SOUTH KOREA - Kim Jong Un slammed “hostile forces” that imposed sanctions on his country, North Korean state media reported Thursday, just hours before a crucial South Korea-U.S. summit in Washington.

Kim vowed to continue socialist economic reforms “so as to deal a telling blow to the hostile forces who go with bloodshot eyes miscalculating that sanctions can bring the DPRK to its knees,” the official Korean Central News Agency reported, using the country’s official acronym.

Later Thursday, South Korean President Moon Jae-in will visit the White House, where he is expected to push U.S. President Donald Trump to ease sanctions on North Korea in a bid to revive nuclear talks with Pyongyang.

FILE - South Korean President Moon Jae-in waves as
FILE - South Korean President Moon Jae-in waves as he is welcomed by U.S. President Donald Trump to the White House in Washington, May 22, 2018.

The negotiations have been stalled since a February Trump-Kim meeting in Hanoi ended without a deal, in large part because of a disagreement over the pace of sanctions relief.

Bigger announcement coming?

North Korean officials have said Kim will soon decide whether to quit the U.S. talks and restart nuclear and missile tests.

That announcement could come this week during a session of North Korea’s rubber-stamp parliament. Pyongyang often uses such meetings to make major policy announcements.

So far, Kim has refrained from making any especially fiery statements, suggesting he may wait for the outcome of the U.S.-South Korea summit.

Trump remains publicly optimistic about the talks, stressing that his close relationship with Kim may ultimately result in a nuclear agreement.

U.S. President Donald Trump and North Korea's lead
FILE - U.S. President Donald Trump and North Korea's leader Kim Jong Un meet during the second U.S.-North Korea summit at the Sofitel Legend Metropole hotel in Hanoi, Feb. 28, 2019.

?Stalled talks

But behind the scenes, U.S. negotiators do not appear to be making progress.

The Washington Post reported late Wednesday the United States and North Korea have not held working level talks since the collapse of the Hanoi summit, and that North Korean officials have not responded to requests for further dialogue.

An Asia policy specialist briefed by the White House confirmed to VOA that U.S. officials have tried to contact their North Korean counterparts through the so-called “New York channel,” the North’s United Nations mission in New York, but have not received replies.

Vice chairman of the North Korean ruling party's central committee Kim Yong Chol and Ri Son-kwon, chairman of the Committee for the Peaceful Reunification of the Fatherland, arrive in Seoul, South Korea, Feb. 25, 2018.
State Media: N. Korea's Ruling Party to Meet Amid 'Tense Situation
North Korea will hold a plenary session of its ruling party's central committee on Wednesday, a day after leader Kim Jong Un chaired a politburo meeting to discuss ways to make progress under the "prevailing tense situation," state media reported. The plenary session, which occurs regularly, comes in the wake of Kim's second summit with U.S.

North Korea may also be preparing for a provocative military parade, according to commercial satellite images analyzed by the Center for Strategic and International Studies’ Beyond Parallel program.

The group says images from earlier this week show military vehicles gathered at a parade training facility in Pyongyang.

“Although (the images are) not conclusive, North Korea may be preparing for a parade to honor Kim Il Sung’s birthday (April 15) or Korean People’s Army (KPA) Foundation Day (April 25),” said Beyond Parallel.

Trump still hopeful

Despite the faltering talks, U.S. Secretary of State Mike Pompeo has said he is hopeful Trump and Kim can soon meet for a third summit to break the deadlock.

Trump and Kim first met in Singapore in June 2018. The two leaders agreed to work toward the denuclearization of the Korean Peninsula, but U.S. officials later conceded the two sides have not agreed on what that means.

North Korea wants the sanctions relief to come in phases, as it makes concessions on its nuclear program. But U.S. officials have said they will not lift sanctions until North Korea completely gives up its nuclear weapons.

President Donald Trump hands a pen to South Korean President Moon Jae-In during a signing ceremony for the United States-Korea Free Trade Agreement during the United Nations General Assembly, Monday, Sept. 24, 2018, in New York.
Moon Travels to Washington to Revitalize N. Korea Talks
Lee Ju-hyun contributed to this report.SEOUL-- South Korean President Moon Jae-in heads for Washington Wednesday, where he will meet with U.S. President Donald Trump on Thursday.

South Korea’s Moon prefers Trump take the phased sanctions approach. He is also trying to get U.S. support to resume inter-Korean projects, such as the Kaesong Industrial Complex or tours of North Korea’s Mount Kumgang.

“Moon has reached the limit on inter-Korean projects he can put in place without sanctions relief, or without causing tensions in the U.S. South Korea alliance,” says Chung Min Lee, a senior fellow at the Carnegie Endowment for International Peace.

“Permanent peace is only possible if progress toward denuclearization can be made,” Lee said. “So Moon has a lot riding on this meeting.”

Moon is set to meet separately with Pompeo and Vice President Mike Pence Thursday before meeting with Trump.

Ahead of the summit, an official with South Korea’s presidential office said Seoul hopes to use the meeting to “quickly revive momentum” in the nuclear talks.