North Korean leader Kim Jong Un held a meeting with Russian Defense Minister Sergei Shoigu to engage in talks concerning military matters and the regional security environment, state media said Thursday.

The meeting illustrated Pyongyang's support for Russia's war in Ukraine as the isolated country celebrated the 70th anniversary of an armistice that halted fighting in the 1950-53 Korean War.

Shoigu accompanied Kim to a defense exhibition that featured the North's banned ballistic missiles as the neighbors pledged to boost ties, media reported.

Shoigu and a Chinese delegation led by a Communist Party Politburo member arrived this week for the 70th anniversary of the end of the Korean War, celebrated in North Korea as Victory Day.

The nuclear-capable missiles are banned for North Korea under U.N. Security Council resolutions adopted with Russian and Chinese support. But this week they provided a striking backdrop for a show of solidarity by countries united by their rivalry with the U.S. and a revival of what some analysts see as their Cold War-era coalition.

The North Korean festivities were to be highlighted by a military parade Thursday night in the capital, Pyongyang, where Kim was to showcase his most powerful, nuclear-capable missiles designed to threaten neighboring rivals and the United States.

North Korea's state media had not confirmed plans for a military parade. But two South Korean government officials, who spoke on condition of anonymity to provide background information, said the parade likely started around 8 p.m. with warmup events and was still going nearly two hours later.

The North's official Korean Central News Agency said Kim and Shoigu talked Wednesday in Pyongyang and reached a consensus on unspecified "matters of mutual concern in the field of national defense and security and on the regional and international security environment."

North Korea has been aligning with Russia over the war in Ukraine, insisting that the "hegemonic policy" of the U.S.-led West forced Moscow to take military action to protect its security interests. The Biden administration has accused North Korea of providing arms to Russia to aid its fighting in Ukraine, although the North has denied the claim.

During the meeting, Shoigu conveyed to Kim a "warm and good letter" signed by Russian President Vladimir Putin, KCNA said.

In the letter, released later by the Kremlin, Putin congratulated Kim on the anniversary of "the defeat of the enemy" in the Korean War and praised the contributions made during the conflict by "Soviet servicemen who fought shoulder to shoulder with Korean patriots, including pilots who made tens of thousands of sorties."

Putin said that experience laid the foundation for good relations between Russia and North Korea, and noted Pyongyang's support for Russia in its conflict with Ukraine.

In a rare case of diplomatic opening since the start of the pandemic, North Korea invited delegations from Russia and China to attend the events marking the armistice of July 27, 1953. While the truce left the Korean Peninsula in a technical state of war, the North still sees it as a victory in the "Grand Fatherland Liberation War."

Shoigu's visit was the first by a Russian defense minister to North Korea since the 1991 breakup of the Soviet Union.

KCNA said Kim took Shoigu to an arms exhibition that showcased some of North Korea's newest weapons and briefed him on national plans to expand the country's military capabilities. State media photos and video showed Kim and Shoigu walking near a row of large missiles mounted on launcher trucks.

Some of the weapons appeared to be intercontinental ballistic missiles that the North has flight-tested in recent months as it pursues an arsenal that can pose a viable threat to the continental U.S. Kim and Shoigu also walked past what were possibly new surveillance and attack drones that had not been publicly announced by the North.

Lee Sung Joon, a spokesperson for South Korea's Joint Chiefs of Staff, said the South Korean military was analyzing the military assets shown in the photos but did not share specific assessments.

When asked about the possibility that Shoigu's visit was to discuss importing weapons from North Korea, John Kirby, the White House's National Security Council coordinator for strategic communications, didn't answer directly but said it was clear Putin is reaching out to other countries for support in his war in Ukraine.

"Mr. Putin knows he's having his own defense procurement problems, his own inventory problems, that his military remains on the back foot, and he's trying to shore that up," Kirby said.

Some experts say North Korea sees U.S. confrontations with China and Russia over regional influence and the war in Ukraine as an opportunity to break out of diplomatic isolation and insert itself into a united front against Washington. Both Moscow and Beijing have blocked U.S. efforts to strengthen U.N. Security Council sanctions on North Korea over its flurry of missile tests since 2022.

The last time North Korea invited foreign government delegates for a military parade was in February 2018, when it held a low-key event that excluded Kim's ICBMs. North Korea at the time was initiating diplomacy with Seoul and Washington hoping to leverage its nuclear program for badly needed economic benefits.

Those efforts led to a summit between Kim and U.S. President Donald Trump that June, but the diplomacy collapsed after their second meeting in February 2019, when the Americans rejected North Korean demands for major sanctions relief in exchange for a partial surrender of their nuclear capabilities.

Kim has since ramped up the development of nuclear arms that he sees as his strongest guarantee of survival, while berating "gangster-like" U.S. sanctions and pressure.

Beijing's delegation to North Korea is headed by mid-level official Li Hongzhong, a Politburo member of China's ruling Communist Party.

Kim met Li during an anniversary concert that began at midnight and was handed a letter from Chinese President Xi Jinping, KCNA said. During a separate reception hosted by senior North Korean officials, Li said in a speech that China was ready to promote the "sound and stable" development of relations with the North.

Analysts say Kim sharing the center stage with Shoigu and Li at a military parade would be a key accomplishment he could show to his domestic audience as well as a statement of defiance toward the U.S.

The Korean War was triggered by a surprise North Korean attack on the South in June 1950. The North was supported by Chinese troops and the then-Soviet air force. South Korea, the U.S., and troops from various nations under the direction of the U.N. fought to push back the invasion.

South Korean President Yoon Suk Yeol marked the armistice anniversary by visiting a cemetery in the port city of Busan that honors the U.N. troops who died during the war.

"The Republic of Korea of today stands on the sacrifice, dedication and blood-drenched uniforms of U.N. soldiers," Yoon said in a speech, referring to South Korea's formal name.

In the face of growing North Korean threats, Yoon has pushed to expand South Korea's military exercises with the U.S. and is seeking stronger U.S. reassurances that it would use its nuclear capabilities to defend the South in the event of a nuclear attack.