Sky News reports.
"South Korea and the US have agreed that military cooperation between Vladimir Putin and Kim Jong Un would violate UN sanctions," the statement reads.
Senior diplomats and defense officials from both countries reportedly urged Moscow to acknowledge its responsibilities as a member of the UN Security Council.
This comes after South Korea's National Security Council said yesterday, September 14, that North Korea and Russia will pay a price if they violate the council's resolutions.
In 2006, after North Korea carried out its first nuclear test and continued to develop its missile programs, the UN Security Council imposed sanctions on it. Russia supported this decision and voted in favor of tightening sanctions over the next ten years.
Earlier, White House spokesman John Kirby said that talks between Russia and the DPRK on military cooperation were "actively progressing."
In July, Russian Defense Minister Sergei Shoigu visited the DPRK and met with his North Korean counterpart, among others.
In early August, the White House accused Russia of trying to buy munitions from the DPRK.
On August 18, US President Joe Biden was ready to meet with North Korean leader Kim Jong Un "without preconditions" to discuss the denuclearization of the Korean Peninsula.
On August 31, the United States imposed sanctions on two Russian citizens over the development of weapons of mass destruction and ballistic missiles for the DPRK.
On September 4, The New York Times reported, citing US and allied officials, that North Korean leader Kim Jong Un plans to visit Russia in September and meet with Vladimir Putin to discuss military cooperation.
On the evening of Friday, September 8, at a parade in honor of the 75th anniversary of the state's founding, DPRK leader Kim Jong Un met with a Chinese delegation before his trip to Russia next week.
On September 11, the North Korean leader travelled by train to Vladivostok to meet with Russian leader Vladimir Putin. The Kremlin confirmed Kim Jong Un's visit to Russia "in the coming days".
On Tuesday morning, September 12, North Korean leader Kim Jong Un's armored train arrived in Russia. The DPRK dictator is expected to meet with Vladimir Putin in Vladivostok, Russia.
On September 13, North Korean leader Kim Jong Un and Russian leader Vladimir Putin had a meeting at the Vostochny Cosmodrome.
The United States is concerned about the talks between the Russian Federation and North Korea and promises consequences if defense cooperation deepens.
On September 15, South Korea's top diplomat hinted that Seoul might impose sanctions against Russia following the recent meeting between Russian President Vladimir Putin and DPRK leader Kim Jong Un.