Officials say North Korea has sent troops to Russia. What would that mean for the war with Ukraine?

KYIV, Ukraine (AP) — American and South Korean officials said Wednesday that there’s evidence North Korea has dispatched troops to Russia in a potential escalation of the nearly 3-year-old war with Ukraine.

If the soldiers' goal is fighting with Russia in Ukraine, it would be the first time a third country puts boots on the ground in the war. Other countries on both sides of the divide have sent military aid, including weapons and training: Iran has supplied Russia with drones, and Western nations have provided Ukraine with modern weapons and financial and humanitarian assistance.

South Korea’s spy chief told lawmakers that 3,000 North Korean troops were being trained to use equipment including drones before being sent to fight in Ukraine. United States Defense Secretary Lloyd Austin told reporters during a visit to Rome that “we are seeing evidence that there are North Korean troops” who have gone to Russia.

“What exactly they’re doing — left to be seen," Austin said. Neither Austin nor South Korean National Intelligence Service Director Cho Tae-yong provided details about how they knew about the North Korean troops, and many questions surround the impact of North Korean participation.

North Korean troops were arriving in Russia’s Kursk region as early as Wednesday to help Russian troops fight off a Ukrainian border incursion, Ukraine Military Intelligence Directorate head Kyrylo Budanov told the online military news outlet The War Zone on Tuesday.

Ukrainian President Volodymyr Zelenskyy told reporters Monday that North Korean officers and technical personnel have already been spotted in Russian-occupied territories. He did not specify when.

“I believe they sent officers first to assess the situation before deploying troops,” Zelenskyy said. He has cautioned that the participation of a third country could escalate the conflict into a world war. Austin said that it would be a “very, very serious issue” if Pyongyang indeed did join the war on Russia’s side.

Ukraine is preparing as though combating North Korea in its territory is inevitable.

An injection of 10,000 North Korean troops, which is what both Ukrainian and South Korean intelligence have claimed, "could significantly destabilize Ukraine’s defense there and greatly accelerate the advancement of Russian forces,” said Glib Voloskyi, an analyst from a Ukrainian think tank, Come Back Alive Initiatives Center.

Ukraine’s “I Want to Live” project, a hotline encouraging Russian soldiers to surrender, published a video in Korean on Wednesday calling for North Korean soldiers to give up.

“We call for the soldiers of the Korean People’s Army, who were sent to help the Putin regime. You should not die senselessly on someone else’s land. There is no need to repeat the fate of hundreds of thousands of Russian soldiers who will never return home!"

Zelenskyy told reporters Monday that the European Union and the U.S. have been cautious in publicly addressing North Korean troops fighting alongside Russia — describing their reactions as “very restrained.”

German and British officials also weighed in, with South Korea hinting that it could support Ukraine with military weapons in the event of North Korea’s confirmed involvement.

“We don’t even know whether we are talking about 1,500 or 12,000, or which kind of soldiers are coming to Russia and to fight where and against," German Defense Minister Boris Pistorius said. “It’s a kind of escalation and it shows us a very important, a very important aspect. International conflicts are approaching very rapidly.”

United Kingdom Defense Secretary John Healey said there was "not just a concern about the potential for an escalation of conflict in Europe. There is an indivisible link with security concerns in the Indo-Pacific as well.”

North Korea and Russia, both in separate confrontations with the West, have deepened their military cooperation in the past two years. In June, they signed a defense deal requiring both countries to provide military assistance if the other is attacked.

For analysts, the introduction of troops would be a sign that the war isn’t going as Russia planned.

“I think Ukraine is wearing down the Russian army as we talk. You don’t get thousands of soldiers from North Korea if your war is going well,” said Justin Crump, a former British tank commander who heads Sibylline, a strategic advisory firm. “You don’t require them."

North Korea has already sent over 13,000 containers of artillery, missiles and other conventional arms to Russia since August 2023 to replenish its dwindling weapons stockpiles. Those missiles are being actively used against Ukrainian targets, officials in Kyiv say.

Associated Press reporters Hanna Arhirova and Illia Novikov contributed. Danica Kirka contributed from London.

South Korean protesters stage a rally against their government's plans to supply lethal weapons to Ukraine, in front of the Presidential Office in Seoul, South Korea, Wednesday, Oct. 23, 2024. (AP Photo/Ahn Young-joon)

A TV screen shows file images of North Korean soldiers during a news program at Seoul Railway Station in Seoul, South Korea, Friday, Oct. 18, 2024. (AP Photo/Ahn Young-joon)

In this photo provided by South Korea Foreign Ministry, South Korea's Vice Foreign Minister Kim Hong Kyun, right, meets with Russian Ambassador to South Korea Georgy Zinoviev at the Foreign Ministry in Seoul, South Korea, Monday, Oct. 21, 2024. (South Korea Foreign Ministry via AP)

FILE - Russian President Vladimir Putin, left, and North Korea's leader Kim Jong Un exchange documents during a signing ceremony of the new partnership in Pyongyang, North Korea, on June 19, 2024. (Kristina Kormilitsyna, Sputnik, Kremlin Pool Photo via AP, File)

FILE - Russian President Vladimir Putin, right, and North Korea's leader Kim Jong Un smile during their meeting at the Pyongyang Sunan International Airport outside Pyongyang, North Korea, on June 19, 2024. (Gavriil Grigorov, Sputnik, Kremlin Pool Photo via AP, File)

FILE - South Korean mechanized unit personnel parade with their armored vehicles during the media day for the 76th anniversary of Armed Forces Day at Seoul air base in Seongnam, South Korea, on Sept. 25, 2024. (AP Photo/Ahn Young-joon, File)

FILE - Soldiers march in a parade for the 70th anniversary of North Korea's founding day in Pyongyang, North Korea, on Sept. 9, 2018. (AP Photo/Ng Han Guan, File)

A TV screen shows an image of soldiers believed to be from North Korea stand in line to receive supplies from Russia during a news program at Seoul Railway Station in Seoul, South Korea, Monday, Oct. 21, 2024. (AP Photo/Ahn Young-joon)

Officials say North Korea has sent troops to Russia. What would that mean for the war with Ukraine?

Officials say North Korea has sent troops to Russia. What would that mean for the war with Ukraine?

FILE - North Korean soldiers march during a mass military parade in Pyongyang's Kim Il Sung Square to celebrate 100 years since the birth of North Korean founder, Kim Il Sung on April 15, 2012. (AP Photo/Ng Han Guan, File)

NEW YORK (AP) — Thousands of nurses in three hospital systems in New York City went on strike Monday after negotiations through the weekend failed to yield breakthroughs in their contract disputes.

The strike was taking place at The Mount Sinai Hospital and two of its satellite campuses, with picket lines forming. The other affected hospitals are NewYork-Presbyterian and Montefiore Medical Center in the Bronx.

About 15,000 nurses are involved in the strike, according to New York State Nurses Association.

The strike, which comes during a severe flu season, could potentially force the hospitals to transfer patients, cancel procedures or divert ambulances. It could also put a strain on city hospitals not involved in the contract dispute, as patients avoid the medical centers hit by the strike.

The hospitals involved have been hiring temporary nurses to try and fill the labor gap during the walkout, and said in a statement during negotiations that they would “do whatever is necessary to minimize disruptions.” Montefiore posted a message assuring patients that appointments would be kept.

The work stoppage is occurring at multiple hospitals simultaneously, but each medical center is negotiating with the union independently. Several other hospitals across the city and in its suburbs reached deals in recent days to avert a possible strike.

The nurses’ demands vary by hospital, but the major issues include staffing levels and workplace safety. The union says hospitals have given nurses unmanageable workloads.

Nurses also want better security measures in the workplace, citing incidents like a an incident last week, when a man with a sharp object barricaded himself in a Brooklyn hospital room and was then killed by police.

The union also wants limitations on hospitals’ use of artificial intelligence.

The nonprofit hospitals involved in the negotiations say they’ve been working to improve staffing levels, but say the union’s demands overall are too costly.

Nurses voted to authorize the strike last month.

Both New York Gov. Kathy Hochul and Mayor Zohran Mamdani had expressed concern about the possibility of the strike. As the strike deadline neared, Mamdani urged both sides to keep negotiating and reach a deal that “both honors our nurses and keeps our hospitals open.”

“Our nurses kept this city alive through its hardest moments. Their value is not negotiable,” Mamdani said.

The last major nursing strike in the city was only three years ago, in 2023. That work stoppage, at Mount Sinai and Montefiore, was short, lasting three days. It resulted in a deal raising pay 19% over three years at those hospitals.

It also led to promised staffing improvements, though the union and hospitals now disagree about how much progress has been made, or whether the hospitals are retreating from staffing guarantees.

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

FILE - A medical worker transports a patient at Mount Sinai Hospital, April 1, 2020, in New York. (AP Photo/Mary Altaffer, File)