Move comes as Putin lowers threshold for use of nuclear weapons; North Korean troops have participated in battle, South Korea says

Some of 10,900 North Korean troops sent to Kursk have been fighting in elite Russian airborne and marine units against Ukraine, according to a lawmaker on the intelligence committee of the South Korean parliament.

Park Sun-won, citing the South’s spy agency, said North Korea had also shipped additional arms for the war in Ukraine, including self-propelled howitzers and multiple rocket launchers.