North Korea leader Kim Jong Un visits a munitions factory producing what state media KCNA says is a "major weapon system" at an undisclosed location in North Korea, in this photo released January 28, 2022 by North Korea's Korean Central News Agency (KCNA).    KCNA via REUTERS    ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THIS IMAGE. NO THIRD PARTY SALES. SOUTH KOREA OUT. NO COMMERCIAL OR EDITORIAL SALES IN SOUTH KOREA. THE IMAGE WAS DIGITALLY MASKED AT SOURCE.
Seoul CNN  — 

North Korea has exported over 1 million shells to Russia since early August, according to South Korea’s National Intelligence Service (NIS).

The shells were provided to Russia in 10 separate shipments to support its war in Ukraine, the NIS understands.

Yoo Sang-bum, a member of the ruling party and of the parliamentary intelligence committee, told reporters on Wednesday that the NIS had briefed lawmakers, saying that “over 1 million shells have been exported, which could be used for more than two months in the war between Russia and Ukraine,” according to Yoo’s office.

North Korea is running its military factories “at maximum capacity to meet Russia’s demand for military supplies,” Yoo said.

The NIS also believes North Korea is in the final stages of preparing for a satellite launch and is currently conducting inspections on the engine and launch device.

“It seems that North Korea received technical guidance from Russia, increasing the chances of a successful launch. However, they still face challenges in terms of technology and funding. Intercontinental ballistic missile (ICBM) re-entry and multiple warhead technologies have not yet been secured,” Yoo stated, quoting the NIS.

This undated photo released by North Korea's official Korean Central News Agency (KCNA) on August 26, 2017 shows rockets being launched by Korean People's Army (KPA) personnel during a target strike exercise at an undisclosed location in North Korea. North Korea fired three short-range ballistic missiles on August 26, the US military said, following weeks of heightened tensions between Washington and Pyongyang. (Photo by KCNA via KNS / AFP) / South Korea OUT / REPUBLIC OF KOREA OUT   ---EDITORS NOTE--- RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO/KCNA VIA KNS" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS
THIS PICTURE WAS MADE AVAILABLE BY A THIRD PARTY. AFP CAN NOT INDEPENDENTLY VERIFY THE AUTHENTICITY, LOCATION, DATE AND CONTENT OF THIS IMAGE. THIS PHOTO IS DISTRIBUTED EXACTLY AS RECEIVED BY AFP. /  (Photo by STR/KCNA via KNS/AFP via Getty Images)

US officials have previously warned North Korea it will “pay a price” if it provides weapons to Moscow to use against Ukraine.

It is “not going to reflect well on North Korea and they will pay a price for this in the international community,” White House National Security Adviser Jake Sullivan told reporters in September, ahead of a closely-watched summit between Russian President Vladimir Putin and North Korean leader Kim Jong Un which saw Pyongyang endorse Russia’s war in Ukraine.

The US and its allies are also concerned about the technology North Korea is seeking from Russia in return for weaponry.

According to two US officials, Pyongyang is seeking technology that could advance its satellite and nuclear-powered submarine capabilities, which could significantly advance North Korea’s capabilities in areas the rogue regime has not fully developed.

As Russia’s war in Ukraine drags into its 21st month, Moscow is desperate for fresh rounds of ammunition. Both sides continue to exchange heavy fire on a daily basis, sapping ammunition supplies.

The US and Europe have also been struggling to provide Ukraine with the ammunition it will need for a prolonged counteroffensive against Russia, with a US defense official telling CNN in July that Ukrainian troops typically fire between 2,000 and 3,000 artillery shells per day at Russian forces.

Despite the large amounts of ammunition expended on both sides, progress on the battlefield remains slow-moving into the winter months.

The current fighting is focused on Ukraine’s south and east.

Ukraine last month had “partial success” in Robotyne in the Zaporizhzhia region, according to Oleksandr Shtupun, spokesperson for Ukraine’s forces in the south. Though progress has been slow, Russian forces are suffering losses of manpower and equipment there, Shtupun said.

Meanwhile, Ukrainian President Volodymyr Zelensky last month said Ukraine was “slowly but surely” pushing Russia out of its land, but the shortage of weapons and ammunition poses difficulties.

CNN’s Yoonjung Seo reported from Seoul and Sophie Tanno wrote from London.