Opec 'lost $700bn on cheaper oil' http://news.bbc.co.uk/2/hi/business/7737074.stm
Opec members have lost about $700bn (£467bn) because of falling crude prices, the oil cartel's president Chakib Khelil said in an interview.
http://news.bbc.co.uk/2/hi/business/7737074.stm