Question Hour: Barack Obama prime guest for India

US President Barack Obama, who will be on a three day visit to India from Sunday, has left Washington for New Delhi. His symbolic visit to the nation has voiced many questions over the strength of Indo-US relations in future. The visit became crucial after Pakistan tried to disrupt it with almost all possible ways. In this edition of our show Question Hour, we focus on prime factors which will come to existence after this high on card visit. Michelle Obama is also visiting India with Mr President.