North Korea said on Friday that it had tested an “underwater nuclear weapon system” in response to joint naval exercises by Washington, Seoul, and Tokyo that involved a US nuclear-powered aircraft carrier.

Nuclear weapons sector to accelerate war preparations to counter what he called unprecedented confrontational moves by the U.S., state media said on Thursday.

Kim made the pledge in a message to Putin marking Russia’s National Day, defending his decision to invade Ukraine and displaying full support and solidarity.

North Korea has bitterly criticized the United Nations Security Council for its meeting on Pyongyang’s recent satellite launch at the request of the United States, vowing to take further self-defensive steps.

On Monday morning, North Korean leader Kim Jong-un called for readiness to launch nuclear strikes at any time in order to deter war against the US and South Korea.

North Korea's military fired a ballistic missile into the Sea of Japan hours before a meeting between Seoul and Tokyo officials to review Pyongyang's actions.

Last night, North Korea displayed the largest number of ballistic missiles capable of carrying a nuclear warhead in a night military exercise on the occasion of the 75th anniversary of the establishment of this country's army. It is possible that the ballistic missiles displayed in this exercise have the ability to attack any part of the world.

North Korea's Foreign Ministry said on Thursday that drills by the United States and its allies have pushed the situation to an "Red-line" and threaten to turn the peninsula into a "huge war arsenal and a more critical war zone."

North Korea says it will no longer be bound by any commitments toward denuclearization and may seek a “new path,” as the US has ignored a year-end deadline to engage in meaningful diplomacy.

North Korea on Tuesday said it will hold working-level nuclear talks with the US on Saturday, signaling the resumption of much-anticipated negotiations after the collapse of a summit in February.

During the failed US-North Korean summit last month in Vietnam, US President Donald Trump gave North Korean leader Kim Jong-un a piece of paper that included a demand for the transfer of Pyongyang’s nuclear weapons to the United States, according to media reports.

North Korea has “apparently almost completed” physical restoration of a rocket launch site, Seoul claimed on Wednesday.

North Korean leader Kim Jong-un is no longer interested in discussing denuclearization plans with US President Donald Trump after their talks fell apart abruptly Thursday, a senior Pyongyang official has warned.

 A U.S. court on Monday ordered Pyongyang to pay $501 million in damages for the torture and death U.S. college student Otto Wambier, who died shortly in 2017 after being released from a North Korea prison.

North Korean state media says Pyongyang will never unilaterally give up its nuclear weapons program unless the United States removes its nuclear threat first, amid a protracted deadlock in nuclear negotiations between the two countries over the sequencing of the denuclearization process in the Korean Peninsula and the removal of international sanctions....

Pentagon had to intervene and stop a tweet by US President Donald Trump before being interpreted by North Koreans as a sign of an upcoming war, says a veteran journalist who has written a book about the president.

North Korean leader Kim Jong-un says he will not take any unilateral steps towards the denuclearization of the Korean Peninsula and is instead awaiting a US response to the measures Pyongyang has already taken, a senior Russian official who met him this weekend says.

North Korea is reportedly set to stage a new military parade as diplomatic efforts on denuclearization of the Korean Peninsula show no sign of progress.

A UN report says North Korea continues its weapons programs despite its leader's promise to denuclearize.