The Brent/WTI spread has historically ranged between $4/bbl and $8/bbl, but it can expand or contract based on factors related to U.S. and international supply and demand conditions. For example, the Brent/WTI spread hit nearly $14/bbl in April 2011 when protests sparked market fears of significant oil supply disruptions in the Middle East.

The crude oil markets have pulled back slightly in the early hours on Monday, but quite frankly this is a scenario where we continue to see plenty of buyers underneath, I think that will be the main story here.

The threat of a wider Israel-Iran war has yet to disrupt the physical flow of oil from Iran or other Gulf states in any major way. Crude prices haven't seemed to notice. Benchmark U.S. futures continued their steep climb Monday,