North Korea unveils nuclear-powered submarine for the first time

SEOUL, South Korea (AP) — North Korea unveiled for the first time a nuclear-powered submarine under construction, a weapons system that can pose a major security threat to South Korea and the U.S.

The state media agency on Saturday released photos showing what it called “a nuclear-powered strategic guided missile submarine,” as it reported leader Kim Jong Un’s visits to major shipyards where warships are built.

The Korean Central News Agency, or KCNA, didn't provide details on the submarine, but said that Kim was briefed on its construction.

The naval vessel appears to be a 6,000-ton-class or 7,000-ton-class one which can carry about 10 missiles, said Moon Keun-sik, a South Korean submarine expert who teaches at Seoul’s Hanyang University. He said that the use of the term “the strategic guided missiles” meant it would carry nuclear-capable weapons.

“It would be absolutely threatening to us and the U.S.,” Moon said.

U.S. National Security Council spokesman Brian Hughes said that “we’re aware of these claims and do not have additional information to provide at this time.

“The U.S. is committed to the complete denuclearization of North Korea,” Hughes said.

A nuclear-powered submarine was among a long wish list of sophisticated weaponry that Kim vowed to introduce during a major political conference in 2021 to cope with what he called escalating U.S.-led military threats. Other weapons were solid-fueled intercontinental ballistic missiles, hypersonic weapons, spy satellites and multi-warhead missiles. North Korea has since performed a run of testing activities to acquire them.

North Korea obtaining a greater ability to fire missiles from underwater is a worrying development, because it’s difficult for its rivals to detect such launches in advance.

Questions about how North Korea, a heavily sanctioned and impoverished country, could get resources and technology to build nuclear-powered submarines have surfaced.

Moon, the submarine expert, said that North Korea may have received Russian technological assistance to build a nuclear reactor to be used in the submarine in return for supplying conventional weapons and troops to support Russia’s war efforts against Ukraine.

He also said that North Korea could launch the submarine in one or two years to test its capability before its actual deployment.

North Korea has an estimated 70-90 diesel-powered submarines in one of the world’s largest fleets. However, they are mostly aging ones capable of launching only torpedoes and mines, not missiles.

In 2023, North Korea said that it had launched what it called its first “ tactical nuclear attack submarine,” but foreign experts doubted the North’s announcement and speculated that it was likely a diesel-powered submarine disclosed in 2019. Moon said that there has been no confirmation that it has been deployed.

North Korea has conducted a slew of underwater-launched ballistic missile tests since 2016, but all launches were made from the same 2,000-ton-class submarine which has a single launch tube. Many experts call it a test platform, rather than an operational submarine in active service.

In recent days, North Korea has been dialing up its fiery rhetoric against the U.S. and South Korea before their upcoming annual military drills set to start on Monday.

During his visits to the shipyards, Kim said that North Korea aims to modernize water-surface and underwater warships simultaneously. He stressed the need to make “the incomparably overwhelming warships fulfill their mission” to contain "the inveterate gunboat diplomacy of the hostile forces,” KCNA reported Saturday.

In this undated photo provided on March 8, 2025, by the North Korean government, North Korean leader Kim Jong Un, center, visits a shipyard to construct warships 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 March 8, 2025, by the North Korean government, North Korean leader Kim Jong Un, bottom right, visits a shipyard to construct warships 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 Central News Agency/Korea News Service via AP)

DODOMA, Tanzania (AP) — Tanzania’s president has, for the first time since the disputed October election, commented on a six-day internet shutdown as the country went through its worst postelection violence.

President Samia Suluhu Hassan on Thursday expressed “sympathy” to diplomats and foreign nationals living in the country, saying the government would strive to ensure there is never a repeat of the same.

Hassan won the October election with more than 97% of the vote after candidates from the two main opposition parties were barred from running and the country’s main opposition leader remained in prison facing treason charges.

Violence broke out on election day and went on for days as the internet was shut down amid a heavy police crackdown that left hundreds of people dead, according to rights groups.

Hassan blamed the violence on foreigners and pardoned hundreds of young people who had been arrested, saying they were acting under peer pressure.

Speaking to ambassadors, high commissioners and representatives of international organizations on Thursday in the capital, Dodoma, she sought to reassure envoys of their safety, saying the government would remain vigilant to prevent a repeat of the disruption.

“To our partners in the diplomatic community and foreigners residing here in Tanzania, I express my sincere sympathy for the uncertainty, service restrictions and internet shutdowns you experienced,” she said.

Hassan defended her administration, saying the measures were taken to preserve constitutional order and protect citizens.

“I assure you that we will remain vigilant to ensure your safety and prevent any recurrence of such experiences,” the president told diplomats on Thursday.

Tanzania has, since the October elections, established a commission of inquiry to look into the violence that left hundreds dead and property worth millions of shillings destroyed in a country that has enjoyed relative calm for decades.

Foreign observers said the election failed to meet democratic standards because key opposition figures were barred.

FILE - Tanzania's President Samia Suluhu Hassan delivers remarks during a campaign rally ahead of the general elections in Iringa, Tanzania, Oct. 5, 2025. (AP Photo, File)