http://rt.com/business/164116-russia-railway-north-korea/
(Yes, it's RT, but if RT can't say useful things about its owner, it has no use.)

http://thediplomat.com/2014/05/russia-and-north-korea-boost-bilateral-ties/

http://www.foxnews.com/world/2014/06/04/russia-aims-to-bolster-ties-with-north-korea/

Then there's settling debts between the two countries in rubles starting this month (http://rbth.com/news/2014/06/05/russia_and_north_korea_to_start_mutual_settlements_in_rubles_in_june_37208.html).

ostro.org, perhaps it was, maybe another site, had a nifty video up but my employer's software is blocking sites to anything that smells suspicious. (It's decided that most Ukrainian sites are Russian.) The video was narrated by Pushkov, I think. About N. Korea. It fairly glowed with praise, pictures of a well-ordered society with large, Soviet-style monuments and clean streets, with lots of busy little workers toiling in the fields. As one Soviet ... uh, Russian Duma member put it while calling for closing sex shops in Russia, as far as the girls go who visit such places ... send them to the fields, there are a lot of sovkhozes that need the labor. (Yes, Soviet collective farms are mostly a thing of the past. But not to that Duma member. For him, the sovkhozes are still struggling in all their glory.)

Meaning North Korea has found another benefactor in an old ally. After the fall of the Soviet Union, Russia had no choice but to give up helping North Korea for the most part since they had their own issues. If they are going after natural resources (maybe rare earth) that won't please China though. North Korea needs the food and oil though, both of which Russia can supply.