Who Wants The Highest Crude Oil Price? Presenting The OPEC Cost Curve

Does the fact that Iran needs higher crude oil prices an indicator that their saber-rattling is an attempt to induce higher oil prices?  In fact, all OPEC exporters may have the same vested interests.  I know that's stating the obvious...

The Saudis keep insisting they don't desire higher prices due to demand destruction, but bigger profits for the lowest-cost producer must be very tempting to them.

http://www.zerohedge.com/news/who-wants-highest-crude-oil-price-presenting-opec-cost-curve