Indian Prime Minister Narendra Modi’s state visit this week was ostensibly a success. The prime minister enjoyed a rousing welcome from Congress and a congenial White House visit, culminating in a state dinner Thursday. He and President Joe Biden announced deals on everything from jet engines to semi-conductors that will strengthen security and technology ties between the United States and India, which is highly desirable. But one key issue remains unaddressed. The very day Modi arrived in Washington, Reuters announced that Indian imports of Russian crude oil hit a new high in May. While it’s all fine and well for...