Ambassador Ronen Sen's tenure in Washington has been eventful. In a little over a year, he oversaw a successful visit to the US in July by Prime Minister Manmohan Singh, and was instrumental in crafting a historic civil nuclear deal between India and the US. He's no stranger to matters nuclear, drawing upon his stint as secretary of the Atomic Energy Commission of India. Sen has earlier been ambassador to Russia, Germany and the UK. His clout in the UPA government is considered formidable, partly because of his proximity to Congress president Sonia Gandhi and the close relationship he had shared with her husband and one-time prime minister Rajiv Gandhi. He spoke to Ashish Kumar Sen, prior to leaving Washington on a "working vacation" in India. Excerpts:
Indo-US ties have undergone a rapid transformation over the past few years. What factors do you attribute this to?