"It's our belief this could end up lasting longer" than markets are pricing in, says Sam Stovall on the U.S.-Iran War. He turns back the pages of history books to explain how prior crude oil disruptions which led to bear markets compare and contrast to what we're seeing today. Sam also notes Archer-Daniels-Midland (ADM), Walmart (WMT), and Nvidia (NVDA) as stocks to watch ahead.