This accounts for nearly one-third of the 194 ballistic missile strikes tracked by Ukraine’s Air Force. August and September saw a surge in these attacks, with Ukrainian officials publicly identifying the KN-23 as a significant threat.The facility, known as the February 11 plant, is part of the Ryongsong Machine Complex in Hamhung, the second-largest city in North Korea.The plant was the only known manufacturer of KN-23 missiles, said Sam Lair, a research fellow at the CNS.Previously released videos by North Korean state-controlled media showed that the complex produced everything from tank wheels to rocked motor cases, Lair added.According to October satellite images, an additional assembly building is under construction, as well as a new housing facility that may be intended for workers, the think tank's analysis showed.The new assembly building is about 60 to 70% the size of the previous one where the missiles were assembled, Reuters reported.