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

The assessment came two days after North Korea confirmed for the first time that it had sent combat troops to help Russia recapture parts of the Kursk region, which it lost control of to a surprise Ukrainian incursion last year.

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