Russia threatens to use nukes all the time, they aren't in the position to lecture N. Korea on anything regarding this.

Never mess with Putin, he's no joke. Last man who attacked him lived a half-life!
I also hear he rides a bear....

I sooooo hate this little pecker. He's even worse than his father, which is quite the feat.

They arent threating anyone, they are warning of North Korea doing so, read the article

They threatened to use nukes over the Ukraine situation, sounds like they're threatening to me. 

Keep it up Kim. You're only sowing the seeds of your own demise and a welcome demise it will be.

so did the US in various cases including against North Korea

you do realize that the UN sanctioned all North Korean ships from the oceans? Its banned to transport to and from North Korea via cargo

http://www.bloomberg.com/news/articles/2016-03-05/philippines-impounds-north-korean-cargo-ship-under-un-sanctions-ilevd9qa

https://www.rt.com/news/334328-north-korea-un-sanctions/

do some research before accusing them for being irrational

I don't recall ever accusing North Korea of being irrational.

Putin is telling the kid in Pyongyang that this is his show and the World is his playground. lol!