With the motive to help New Delhi face any nuclear threats from Pakistan and other "volatile" countries in the region, the US and India are engaged in talks over sale of missile shield systems which is also a part of their overall strategic partnership.

The media reports which quoted unnamed US diplomats said, "The preliminary talks took place mainly at a scientific and technical level and American defense officials had conducted computer simulations with their Indian counterparts."

The relations between India and US have got better in the recent years and concluding the signing of a bilateral civil nuclear cooperation agreement, things became even better.

"India's need for greater protection against threats emanating from Pakistan and other volatile countries in the region was highlighted by an escalation in the Indo-Pak tensions in the aftermath of the Mumbai terror attacks," confirm the reports.

Furthermore, it is also being said that even China, with which India have had disputes over borders, is being seen a potential adversary.