What that means is that Russia understands the dangers of Islamic fanatics better than the US. Russia is not our enemy unless we make them such.
Any nation that builds nuclear power plants in Iran may not be the enemy of the U.S. but they sure aren’t our friend.
Also Russia is providing Iran with Russia’s most sophisticated missile defense system.
“Russia to build 2 nuclear power plants in Iran”
https://www.rt.com/business/385394-russia-iran-nuclear-power-plants/
“Russia To Send Iran $1 Billion-Worth Of Missile Defense Systems.”
http://dailycaller.com/2017/02/20/russia-to-send-iran-1-billion-worth-of-missile-defense-systems/