Speaking to NDTV, global energy expert and author Robert McNally says the United States underestimated how long it would take to degrade Iran's ability to disrupt shipping through the Strait of Hormuz. McNally, former special assistant to President George W. Bush, warns that energy, agricultural and industrial supply disruptions could persist far longer than initially assumed, even as uncertainty looms over President Donald Trump's next move and the possibility of a ceasefire.