In the past 25 years, India and the United States have become closer than ever before, building strong economic and strategic ties. Their partnership has rested on shared values and shared interests: they are the two largest democracies in the world, home to vast multicultural populations, and both have been concerned about the rise of India’s northern neighbor, China. But in the past four months, that carefully cultivated relationship has abruptly gone off the rails. The return of U.S.