Citigroup: time to write OPEC's obituary?

Not that long ago, it used to be that oil traders and energy giants hung on OPEC's every word. Now we have Citigroup's global head of commodities research asking if it's time to write the group's obituary.

Citigroup: time to write OPEC's obituary? source: http://finance.yahoo.com/news/citigroup-asks-time-write-opecs-135635758.html