Putin is squealing like a stuffed pig over Biden allowing Ukraine to use long range U.S. made missiles to be launched into Russia, basically he doesn't think it fair!
The fact he's using N. Korean missiles to use against Ukraine and now having thousands of N.Korean soldiers manning the border seems to be o.k. to him, the fact that virtually all of the N.K. soldiers have little or no battlefield experience, it's just two megalomaniacs playing war games with live people.
They say Trump is going to end this conflict {that should be interesting}
A possible solution would be to let the U.N. temporarily take over the border with Russia and Ukraine, taking over two miles from the border all the way round Ukraine thereby creating a neutral zone in which neither armies can cross and any missiles will be shot down. Putin shouldn't be able to complain because Ukraine WON'T be a U.N. country in total which is what he is afraid of.