North Korea vows to block border with South Korea and build front-line defense structures

SEOUL, South Korea (AP) — North Korea said Wednesday it will permanently block its border with South Korea and build front-line defense structures to cope with “confrontational hysteria" by South Korean and U.S. forces, while not announcing an expected constitutional revision to formally designate South Korea its principal enemy and codify new national borders.

While the moves were likely a pressure tactic, it's unclear how they will affect ties with South Korea since cross-border travel and exchanges have been halted for years.

North Korea's military said it will “completely cut off roads and railways ” linked to South Korea and “fortify the relevant areas of our side with strong defense structures,” according to the North's official Korean Central News Agency.

The North's military called its steps a “self-defensive measure for inhibiting war and defending the security” of North Korea. It said that “the hostile forces are getting ever more reckless in their confrontational hysteria.” It cited what it called various war exercises in South Korea, the deployment of U.S. strategic assets and its rivals' harsh rhetoric.

South Korea’s military said later Wednesday that it won’t tolerate any attempt by North Korea to change the status quo. It said South Korea will “overwhelmingly punish” North Korea if it launches provocations. A South Korean military statement said North Korea’s nuclear and missile programs have threatened peace on the Korean Peninsula.

South Korean officials earlier said North Korea had already been adding anti-tank barriers and reinforcing roads on its side of the border since April in a likely attempt to boost its front-line security posture and prevent its soldiers and citizens from defecting to South Korea. In a report to parliament on Tuesday, South Korea's Unification Ministry said that North Korea has been removing ties on the northern side of cross-border railways and nearby lamps and planting mines along the border.

KCNA earlier Wednesday said the Supreme People’s Assembly met for two days this week to amend the legal ages of North Koreans for working and participating in elections. But it didn't say whether the meeting dealt with leader Kim Jong Un's order in January to rewrite the constitution to remove the goal of a peaceful Korean unification, formally designate South Korea as the country’s “invariable principal enemy” and define the North’s sovereign, territorial sphere.

At the center of outside attention was whether North Korea makes new legal claims on the waters currently controlled by South Korea off their west coast. The poorly marked western sea boundary is where three bloody naval skirmishes and two deadly attacks blamed on North Korea happened in the past 25 years.

Some experts say North Korea might have delayed the constitutional revision but others speculated it amended the constitution without announcing it because of its sensitivity.

Kim's order stunned many North Korea watchers because it was seen as breaking away with his predecessors' long-cherished dreams of achieving a unified Korea on the North's terms. Experts say Kim likely aims to diminish South Korea’s voice in the regional nuclear standoff and seek direct dealings with the U.S. They say Kim also likely hopes to diminish South Korean cultural influence and bolster his rule at home.

Tensions on the Korean Peninsula are at their highest point in years, with North Korea continuing a run of provocative weapons tests and South Korea and the U.S. expanding their military drills. KCNA said North Korea on Tuesday tested a long-range artillery system that observers say pose a direct threat to Seoul, the South Korean capital, which is only an hour’s drive from the border.

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Visitors watch North Korean side from the Unification Observation Post in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

North Korean soldiers stand at the North's military guard post, seen from Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A visitor watches North Korean side from the Unification Observation Post in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A North Korean flag is seen in North Korea's town Kaepoong, seen from Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A South Korean national flag flutters in the wind at the Unification Observation Post in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A visitor walks past a signboard showing the distance to North Korea's capital Pyongyang and to South Korea's capital Seoul from Imjingang Station in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

A North Korean flag flutters in the wind atop a 160-meter (525-foot) tower in the North's Kijong-dong village near the truce village of Panmunjom, seen from Paju, South Korea, near the border with North Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

In this photo provided Wednesday, Oct. 9, 2024, by the North Korean government, assembly members attend the Supreme People’s Assembly at the Mansudae Assembly Hall in Pyongyang, North Korea. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

Barricades are placed near the Unification Bridge, which leads to the Panmunjom in the Demilitarized Zone in Paju, South Korea, Wednesday, Oct. 9, 2024. (AP Photo/Lee Jin-man)

In this photo provided Wednesday, Oct. 9, 2024, by the North Korean government, Choe Ryong Hae, the chairman of the Assembly’s Standing Committee, speaks during the Supreme People’s Assembly in Pyongyang, North Korea. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

In this undated photo provided on Saturday, Oct. 6, 2024 by the North Korean government, North Korean leader Kim Jong Un, center, watches an artillery exercise at an undisclosed place in North Korea. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

In this undated photo provided on Saturday, Oct. 6, 2024 by the North Korean government, North Korean leader Kim Jong Un, center, visits to watch an artillery exercise at an undisclosed place in North Korea. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

WASHINGTON (AP) — A top Danish official said Wednesday that a “fundamental disagreement” over Greenland remains with President Donald Trump after holding highly anticipated White House talks with Vice President JD Vance and Secretary of State Marco Rubio.

The two sides, however, agreed to create a working group to discuss ways to work through differences as Trump continues to call for a U.S. takeover of the semiautonomous territory of NATO ally Denmark.

“The group, in our view, should focus on how to address the American security concerns, while at the same time respecting the red lines of the Kingdom of Denmark,” Danish Foreign Minister Lars Løkke Rasmussen told reporters after joining Greenland’s foreign minister, Vivian Motzfeldt, for the talks. He added that it remains "clear that the president has this wish of conquering over Greenland.”

Trump is trying to make the case that NATO should help the U.S. acquire the world's largest island and says anything less than it being under American control is unacceptable.

Denmark, meanwhile, announced plans to boost the country's military presence in the Arctic and North Atlantic as Trump tries to justify his calls for a U.S. takeover of the vast territory by repeatedly claiming that China and Russia have their designs on Greenland, which holds vast untapped reserves of critical minerals.

The president, who did not take part in Wednesday’s meeting, told reporters he remained committed to acquiring the territory.

“We need Greenland for national security,” Trump said. “We’ll see how it all works out. I think something will work out.”

Trump named Louisiana Gov. Jeff Landry as a special envoy to Greenland last month. Landry did not attend Wednesday's meeting, but was scheduled to travel to Washington on Thursday and Friday for meetings that include the topic of Greenland, his spokesperson said.

Landry, following Trump's latest comments, posted on X that Trump was “absolutely right” about acquiring Greenland and the territory "is a critical component of our nation’s national security portfolio.”

Before the meeting, Trump took to social media to make the case that “NATO should be leading the way" for the U.S. to acquire the territory. NATO Secretary General Mark Rutte has sought to keep an arms-length away from the dispute between the most important power and the other members of the 32-country alliance unnerved by the aggressive tack Trump has taken toward Denmark.

Both Løkke Rasmussen and Motzfeldt offered measured hope that the talks were beginning a conversation that would lead to Trump dropping his demand and create a path for tighter cooperation with the U.S.

"We have shown where our limits are and from there, I think that it will be very good to look forward,” Motzfeldt said.

In Copenhagen, Danish Defense Minister Troels Lund Poulsen announced a stepped-up military presence in the Arctic “in close cooperation with our allies," a necessity in a security environment in which “no one can predict what will happen tomorrow.”

Several of the country's allies, including Germany, France, Norway and Sweden, announced they were arriving in Greenland along with Danish personnel to take part in joint exercises or map out further military cooperation in the Arctic.

NATO is also looking at how members can collectively bolster the alliance's presence in the Arctic, said a NATO official who was not authorized to comment publicly and spoke on condition of anonymity.

Greenland is strategically important because, as climate change causes the ice to melt, it opens up the possibility of shorter trade routes to Asia. That also could make it easier to extract and transport untapped deposits of critical minerals which are needed for computers and phones.

Trump says Greenland is also “vital” to the United States' Golden Dome missile defense program. He also has said Russia and China pose a threat in the region.

But experts and Greenlanders question that claim, and it has become a hot topic on the snow-covered main street in Greenland’s capital, where international journalists and camera crews have descended as Trump continues his takeover talk.

In interviews, Greenlanders said the outcome of the Washington talks didn't exactly evince confidence that Trump can be persuaded.

“Trump is unpredictable,” said Geng Lastein, who immigrated to Greenland 18 years ago from the Philippines.

Maya Martinsen, 21, said she doesn't buy Trump's arguments that Greenland needs to be controlled by the U.S. for the sake maintaining a security edge in Arctic over China and Russia. Instead, Martinsen said, Trump is after the plentiful “oils and minerals that we have that are untouched.”

Greenland “has beautiful nature and lovely people," Martinsen added. "It’s just home to me. I think the Americans just see some kind of business trade.”

Denmark has said the U.S., which already has a military presence, can boost its bases on Greenland. The U.S. is party to a 1951 treaty that gives it broad rights to set up military bases there with the consent of Denmark and Greenland.

Løkke Rasmussen and Motzfeldt also met with a bipartisan group senators from the Arctic Caucus. The senators said they were concerned Trump's push to acquire Greenland could upend NATO and play into the hands of Russian President Vladimir Putin.

Republican Sen. Lisa Murkowski of Alaska, who has introduced legislation to try to block any U.S. action in Greenland, said it was “stunning” to her that they were even discussing the matter. “We are operating in times where we are having conversations about things that we never even thought possible,” Murkowski said.

Sen. Angus King, I-Maine, said it is “nonsense” to say that the U.S. needs to control Greenland to protect national security. The officials were “very open to additional national security assets in Greenland in order to meet whatever risks there are.”

A bipartisan delegation of U.S. lawmakers plans to show their solidarity by traveling to Copenhagen this week.

Burrows reported from Nuuk, Greenland and Ciobanu from Warsaw, Poland. Associated Press writers Stefanie Dazio and Geir Moulson in Berlin, Mary Clare Jalonick, Lisa Mascaro, Aamer Madhani and Will Weissert in Washington, Sara Cline and Jack Brook in Baton Rouge, La., and Catherine Gaschka in Paris contributed to this report.

People walk on a street in Nuuk, Greenland, Wednesday, Jan. 14, 2026. (AP Photo/Evgeniy Maloletka)

An American flag is displayed on the facade of the US consulate in Nuuk, Greenland, Wednesday, Jan. 14, 2026. (AP Photo/Evgeniy Maloletka)

From left, Greenland Foreign Minister Vivian Motzfeldt, Danish Foreign Minister Lars Løkke Rasmussen, Sen. Ruben Gallego, D-Ariz., Sen. Lisa Murkowski, R-Alaska, and Sen. Angus King, I-Maine, begin a meeting on Capitol Hill as officials from Denmark and Greenland meet with lawmakers from the Arctic Caucus, at the Capitol in Washington, Wednesday, Jan. 14, 2026. (AP Photo/J. Scott Applewhite)

The demonstration under the slogan Greenland belongs to the Greenlanders is held in front of the American embassy in Copenhagen, Denmark, Wednesday, Jan. 14, 2026. (Thomas Traasdahl/Ritzau Scanpix via AP)

Denmark's Foreign Minister Lars Løkke Rasmussen, third from left, Greenland's Foreign Minister Vivian Motzfeldt, not shown, and their delegations leave the Old Eisenhower Executive Office Building on the grounds of the White House, Wednesday, Jan. 14, 2026, in Washington. (AP Photo/Alex Brandon)

Denmark's Foreign Minister Lars Løkke Rasmussen and Greenland's Foreign Minister Vivian Motzfeldt speak at a news conference at the Embassy of Denmark, Wednesday, Jan. 14, 2026, in Washington. (AP Photo/John McDonnell)

Greenland's Foreign Minister Vivian Motzfeldt speaks at a news conference at the Embassy of Denmark, Wednesday, Jan. 14, 2026, in Washington. (AP Photo/John McDonnell)

Denmark's Foreign Minister Lars Løkke Rasmussen and Greenland's Foreign Minister Vivian Motzfeldt speak at a news conference at the Embassy of Denmark, Wednesday, Jan. 14, 2026, in Washington. (AP Photo/John McDonnell)

Denmark's Foreign Minister Lars Løkke Rasmussen and Greenland's Foreign Minister Vivian Motzfeldt speak at a news conference at the Embassy of Denmark, Wednesday, Jan. 14, 2026, in Washington. (AP Photo/John McDonnell)

Denmark's Foreign Minister Lars Løkke Rasmussen and Greenland's Foreign Minister Vivian Motzfeldt speak at a news conference at the Embassy of Denmark, Wednesday, Jan. 14, 2026, in Washington. (AP Photo/John McDonnell)

Denmark's Foreign Minister Lars Løkke Rasmussen and Greenland's Foreign Minister Vivian Motzfeldt speak at a news conference at the Embassy of Denmark, Wednesday, Jan. 14, 2026, in Washington. (AP Photo/John McDonnell)

Denmark's Foreign Minister, Lars Loekke Rasmussen, right, and Greenland's Minister for Foreign Affairs Vivian Motzfeldt, left, prepare at the danish embassy for the meeting with the American Vice President, J.D. Vance, and Foreign Minister Marco Rubio in Washington D.C., Wednesday, Jan. 14, 2026. (Mads Claus Rasmussen/Ritzau Scanpix via AP)

A fisherman carries a bucket onto his boat in the harbor of Nuuk, Greenland, on Tuesday, Jan. 13, 2026. (AP Photo/Evgeniy Maloletka)

A boat travels at the sea inlet in Nuuk, Greenland, on Tuesday, Jan. 13, 2026. (AP Photo/Evgeniy Maloletka)

People walk near the church in Nuuk, Greenland, on Tuesday, Jan. 13, 2026. (AP Photo/Evgeniy Maloletka)

A bird stands on a boat at the harbour of Nuuk, Greenland, on Tuesday, Jan. 13, 2026. (AP Photo/Evgeniy Maloletka)

People walk along a street in downtown of Nuuk, Greenland, on Tuesday, Jan. 13, 2026. (AP Photo/Evgeniy Maloletka)