Ukraine continues to cripple Russia's energy sector by hitting numerous oil refineries, depots, chemical plants, and more ...

You would be forgiven for believing the Russia and Norway do not share a border, or that travel between the two countries would have to come via Sweden or Finland from a cursory glance at a map.

Still, among the nations Putin has been cozying up to, some are more important to Russia because they keep trade humming. These are five key countries for Russia's sanctions-skirting economy ...