Russia and Iran has been promoting the creation of a new Organization to manage a Gas Cartel with the 5 biggest producers (Russia 25% of Gas reserves, Iran, venezuela, Qatar and Nigeria), even NATO launched a report fearing the creation of that new OPEC, cuz that means Russia can blackmail Europe (Russia supplies them with 24% of Gas).
But the Real fear is that the cartel can start asking for payment with Euros or other hard currency, so the DOLLAR would start loosing more value.
Nato fears Russian plans for ‘gas Opec’
5 countries to launch Gas OPEC on april 2007
GAS OPEC Cartel