Officials from the United States and India occasionally have some difficult private conversations about Ukraine and India’s domestic politics. But the official state visit this week by Indian Prime Minister Narendra Modi to the U.S. will mainly be about showcasing the strength of the two countries’ burgeoning partnership. Modi and President Joe Biden both need the optics of a visit rich in symbolism to demonstrate the substantive achievements of a relationship based on shared concerns about China and multi-billion dollar deals in technology and defense. Modi wants to highlight his standing as a world leader ahead of the 2024 Indian...