Obama in India: Country is 'lynchpin' in US's pivot to Asia

US President Barack Obama has attended India's annual Republic Day parade on the second day of his visit to the country.

Following the ceremonies, he attended a forum of business executives, where he and Indian Prime Minister Narendra Modi touted the economic co-operation between their countries.

Former US Ambassador to India Timothy Roemer says the trip signals an important step in US-India relations - as well as in President Obama's greater foreign policy agenda.

"India is a lynchpin as he has looked at this new pivot - or rebalance - to Asia," Mr Roemer said in an interview with the BBC's Katty Kay.