If I could require every candidate running for office to see one movie, it would be "Zero Days," the most terrifying movie of the year. It is the story of the Stuxnet virus developed by the US and Israeli governments to infect the nuclear facilities in Iran. As one of the experts in the film notes, for thousands of years combat was carried out by the army on land and the navy on the water. In the 20th century, battles moved into the air, and so we needed an air force. And the development of...