Secretary of State John Kerry arrived in New Delhi onto participate in the fourth round of Indo-US strategic dialogue even as US announced to invest $100 million in India's burgeoning clean energy sector.

Kerry, 69, accompanied by a high-level delegation arrived here on a three-day visit, the first one after assuming the charge of the State Department earlier this year. He will co-chair the India-US strategic dialogue with External Affairs Minister Salman Khurshid during which key issues like bilateral trade, defence and security cooperation besides energy and higher education would be discussed.

Ahead of his visit Kerry described India as a strategic partner in South Asia with whom the US has one of the defining partnership of the 21st century.