Fighting across Iraq, Libya, Ukraine and Gaza, and an accelerating economy, should mean higher oil prices. Yet crude is falling.

Six years ago, oil soared to a record $147 a barrel as tension mounted over Iran's nuclear program and the world economy had just seen the strongest period of sustained growth since the 1970s. Now, West Texas Intermediate, the U.S. benchmark price, has traded below $100 for 10 days and Brent, the European equivalent, tumbled to a 13-month low.

What's changed is the shale fracking boom. The U.S. is pumping the most oil in 27 years, adding more than 3 million barrels of daily supply since 2008. The International Energy Agency said yesterday that a supply glut is shielding the market from disruptions. Bank of America Corp., Citigroup Inc. and BNP Paribas SA concur.