Todd Colvin of Mark IV Brokerage examines the recent pullback in WTI Crude Oil futures as prices slip to 85 a barrel to start the week. Colvin discusses the 4 percent reversal from Thursday's highs amid ongoing Middle East negotiations and headline risks regarding potential sanctions. He also highlights the continuing August trend of lower volatility in the CVOL index and breaks down recent positioning data showing speculators holding their most net long positions since mid-June.