The two countries have vowed to expand bilateral relations after North Korea sent troops and weapons in support of Russia’s war against Ukraine.

North Korea and Russia have begun building their first road link, the two countries announced, hailing the construction of a bridge over a border river as a major development that will further expand their booming ties.

Russia's prime minister hailed the construction of the first road link with North Korea as a "landmark moment."

North Korea has gained exposure to cutting edge battle tactics fighting Ukraine. Military experts told BI South Korea should be worried.

Roughly 600 North Korean troops have been killed fighting alongside Russia against Ukraine, South Korean lawmakers said, citing the country's intelligence agency.

The figures comes after the first official acknowledgment by Pyongyang and Moscow of North Korean troops' involvement in the Ukraine war.