North Korea and Russia's deepening military relationship has sounded alarm in South Korea and the United States.

Ukraine has found “irrefutable evidence” of North Korea’s involvement in Russia’s war against his country, president Volodymyr Zelensky said this week as he announced the capture of two North Korean soldiers.

To avoid being hit by multiple drone attacks from the air, North Koreans have taken to forming a ‘human shield,’” says a Seoul-based specialist.

North Korea is likely preparing to send additional troops to Russia after suffering heavy losses in battles against Ukrainian forces, South Korea's military said Friday.

Multiple defectors from North Korea spoke to NBC News about the mindset of soldiers sent to fight for Russia in Ukraine.

British intelligence has reported that one-third of the troops deployed alongside Russian forces in Ukraine are already out of action. Pyongyang sent a contingent of 12,000 soldiers to Russia to assist local forces in regaining lost territory in the Kursk region,

Troops from North Korea appear to have fallen back from Russia's frontline after suffering heavy losses when engaging Ukrainian forces.