North Korea is expanding a weapons plant that manufactures missiles used by Russia against Ukraine, according to new research from a US-based think tank.

In this volatile and extremely uncertain landscape, South Korea has little to gain and much to lose by taking premature action that might harm its national interests.

The United States has information that North Korea is preparing additional supplies of ballistic missiles to Russia, as well as long-range self-propelled artillery and multiple launch rocket systems (MLRS).