Lets see...
Iran didn't go to war with Iraq, it responded to a war of aggression by Iraq
The secular Baathist state and Iran were extremely ideologically opposed. That was the core cause of the war, not irans desire to get Iraqi oil.
Saudis control barely over 10 percent of the worlds oil supply and about twenty percent of the proven reserves, not half.
Russia is a net oil exporter with zero need to "sell out to Iran." Russia has other wishes.
Iran responded to Saddam Hussein's use of WMD's in that war, code word for liberals, "act of aggression".
Bit of "revision of history" there.
No "Oil" was not the primary cause of the war, just wanted to see if you would mention the use of chemical weapons...
NOT!
As for Saudi Arabia's Oil Reserves...
"Proven" oil reserves stand at 268 billion barrels ; (43x10*9 m*3) making it the second largest in the world, only under Venezuela which just in 2011 moved up their "proven" reserves to 297 Gbbl.
Where are your stats coming from, MSNBC?
Now Russia...
First they invade South Osstetia, stopping Georgia from taking control of the gas pipe lines that run from the Black Sea.
Then take back control of Georgia, guaranteeing that they will always be a puppet state to Russia.
Move into Ukraine with thousands of troops, shoot down a commercial airliner with a surface to air missile, while simultaneously taking total control of Crimea, bombing civilians indiscriminately.
Did I mention they now control one of the largest pipe lines in the world from the Black Sea to our allies in Europe .
I guess Vladimir Putin didn't get the memo that Barack Obama has made a RED LINE.
Now Russia is in Syria telling Obama to keep his planes out of "their" airspace.
How is that carrot instead of a stick working for you now?