Russia has recently stated that the US supplying Ukraine with weapons to attack Russia would have consequences.
This was already in the works in 2022.
Putin vows to expand partnership with North Korea’s Kim Jong Un Jeong-Ho Lee August 15, 2022
https://www.stuff.co.nz/world/300663083/putin-vows-to-expand-partnership-with-north-koreas-kim-jong-un