Crude oil spiking and concerns of "boots on the ground" in Iran have investors pulling back ahead of Thursday's opening bell. Kevin Green walks investors through the recent volatility and the central role energy infrastructure risks play. As KG says, keep an eye on the 6,500 level for the S&P 500. Gold's decline also continued and silver's selling action was even steeper. KG explains how global banking moves are behind some of the fluctuation.