Ukraine’s U.N. Ambassador Sergiy Kyslytsya responded: “None of the countries that provide assistance to Ukraine is under Security Council sanctions.” “Receiving assistance from the fully-sanctioned North Korea is a brazen violation of the U.N. Charter,” he added. “Sending the DPRK troops to support Russia’s war of aggression against Ukraine is a flagrant violation of international law.”
While nobody has officially send troops, there are a significant amount of professional soldiers from NATO states in Ukraine. Some of them volunteered sure, but I would assume that there are also special forces there, for let’s say payed time off. This however does not change the original point, that the use of 10000+ NK soldiers changes the dynamic of the war.
The only quote on quote “official” foreign troops in Ukraine that we know of are UK troops programming Stormshadow missiles. Everyone else we know of are all private volunteers who joined Ukraine’s army on their own. If NATO had actual troop involvement in Ukraine this war would be very quickly over (and I personally think we’re just wasting lives & time for what is inevitably needed anyway).