http://blogs.cfr.org/levi/2013/01/24/trading-volumes-underscore-brents-ascendance-as-world-oil-benchmark/citi-chart_ice-wti-brent-nymex-wti/ CFR experts examine the science and foreign policy surrounding climate change, energy, and nuclear security. Sat, 18 May 2013 17:16:38 +0000 hourly 1 http://wordpress.org/?v=3.4.2