U.S. locked in a ‘test of wills’ as Iran vows to keep Strait of Hormuz closed: Military analyst

NBC News Correspondents Richard Engel, Raf Sanchez, Christine Romans and Monica Alba discuss the latest escalations in the Middle East as oil prices surge and President Trump weighs options to lower the price of energy. Retired Colonel Steve Warren analyzes the next phase of the war in Iran and shifts in U.S. strategy.