India is also likely to announce two sites for US nuclear reactors during Clinton's visit, official sources said.

The visit will focus on ushering in Phase III of the strategic partnership, which Clinton recently described as '3.0' version, borrowing an analogy from IT software.

Ahead of her visit, Clinton struck an upbeat note on the trajectory of India-US partnership in days to come. In an interview to CNN-IBN, Clinton said: 'I am really pleased that when I come to India, we are going to be announcing a very broad comprehensive agenda for dialogue that (External Affairs Minister (S.M.) Krishna and I would be leading.'

'We see India as an economic power, a strategic partner, a country that has unlimited potential,' she said.

'Clinton is genuinely excited about this trip and is really looking forward to spending a lot of time in India, three full days,' State Department Spokesman Ian Kelly said in Washington.

In New Delhi, she will attend a meet on climate change and interact with scientists researching at the Pusa Institute - two important areas of India-US cooperation.

She will also meet Congress president and UPA chairperson Sonia Gandhi, Finance Minister Pranab Mukherjee and Leader of Opposition L.K. Advani.

Clinton had visited India earlier in 1999 and 2005. She flies to Thailand Tuesday to attend the meeting of ASEAN foreign ministers in Phuket.