Russian no mia culpa
Actually, I was living with a Russian immigrant girl and her daughter when the USSR changed ownership -- we watched it on TV and she was rather worried about her parents that were still in Moscow.
Ukrainians were citizens of the USSR and many ethnic Russians lived in Ukraine. I don't know who sold the DPRK (North Korea) missile technology Ukrainians or Russians living in Ukraine.
Putin will do nothing about the North Korean nuclear problem on his doorstep neither will the Chinese. China and Russia are upwind of North Korea if you get my drift ...
Neutron bombs, mounted on tactical nuclear missiles, have a less than 250 miles radius of radiation -- I would keep that in mind. Some artillery fired nuclear munitions have very small radiation radius. If Kim calls Trump an old fat man with a little cock Trump might get pissed and start the LAST war over the North Korean fat-boy's big mouth and belligerent attitude. That will not be good for anyone.
Actually North Korea could expect a EMP attack at any time. Then a few days of shock and awe. Ironically, some of their ancient military equipment might survive EMP -- but half of their country would be disabled. Is North Korea worth dying over? North Korea's obstinate ways may get a lot of people killed. If North Korea was threatening to nuke Beijing or Moscow -- what would you do?