North Korean leader Kim Jong Un has offered Moscow his "unconditional support" for the war in Ukraine, according to reports by Pyongyang's state media.
During a meeting with Russian Foreign Minister Sergei Lavrov in North Korea, Kim declared that Pyongyang stands by "all measures taken by the Russian leadership" to address the "real cause of the crisis in Ukraine."
Western officials believe North Korea has sent about 11,000 troops to Russia over the past year to fight against Ukraine.
Russian President Vladimir Putin launched a full-scale invasion of Ukraine in February 2022.
According to North Korea's state news agency KCNA, Kim and Lavrov met on Saturday in a "warm atmosphere and social trust."
The North Korean leader also expressed "strong belief that the Russian army and people will surely win victory in fulfilling the sacred cause of protecting the country's dignity and fundamental interests."
On Telegram, the Russian Foreign Ministry published a video of the two men greeting each other with a handshake and hug.
Lavrov also met with his North Korean counterpart, Choe Son Hui, and thanked her for the contribution of North Korean "heroic soldiers" sent to Russia's aid, the Russian TASS agency reported.
North Korea's new military support for Russia comes as US President Donald Trump has resumed military supplies to Ukraine after a brief interruption.
Trump told NBC News on Thursday that he had reached an agreement with NATO to send Patriot air defense systems to Ukraine through the alliance, following a wave of Russian air strikes.
Pyongyang first publicly acknowledged sending troops to Russia in April, months after Ukraine and Western countries had discovered massive movements of North Korean troops towards the Russian-Ukrainian front line.
Kim signed an agreement with Russian President Vladimir Putin in June last year, where they pledged to support each other in the event of either facing "aggression".
In addition to troops, North Korea has also promised to send thousands of workers to help rebuild the devastated Kursk region in Russia, according to Moscow's security chief last month.