US Secretary of State Marco Rubio’s visit to India’s Jamnagar this week – home to the world’s largest oil refining complex – signals energy cooperation as the anchor for bilateral ties even as broader policy friction frays relations, according to analysts. On Tuesday, Rubio indicated that India’s largest private company, Reliance Industries, which owns the Jamnagar oil refinery complex, will buy more Venezuelan oil. “India is a refining superpower. They have the capability to refine heavy crude....