This year’s grueling U.S. presidential campaign has had the occasion to discuss the Ku Klux Klan, Tim Kaine, and Don King, but not the K-word that every citizen of South Asia instantly knows by shorthand: Kashmir. In all likelihood, Americans will soon recognize this as a costly omission. Whoever wins the White House in November will likely be forced, early in his or her administration, to address a crisis that is quickly coming to a head — one involving jihadi terrorism, nuclear weapons, and military conflict, with the potential to unsettle American allies and interests across Asia.