North Korea has sent about 5,000 construction troops to Russia since September to help with "infrastructure reconstruction," South Korea’s intelligence agency said.

It is reported that around 10,000 North Korean troops are currently stationed near the Russian-Ukrainian border, while about 1,000 North Korean sappers are engaged in demining operations.

According to Conservative South Korean lawmaker Lee Seong-Kweun, "continued signs of training and personnel selection in preparation for additional troop deployments have been detected."

Source: https://m-en.yna.co.kr/view/AEN20251104012000320?section=nk/nk,

https://euractiv.com/news/north-korea-sent-5000-construction-troops-to-russia-says-south-korean-intelligence-agency/
https://x.com/Gerashchenko_en/status/1986010168581140988