
US President Barack Obama and first lady Michelle Obama wave upon their arrival at Air Force station Palam, in New Delhi on Sunday. (Source: PTI Photo)

President Barack Obama and first lady Michelle Obama walk down the stairs as they arrive on Air Force One at Air Force Station Palam. (Source: AP photo)

President Barack Obama and first lady Michelle Obama are greeted by Indian Prime Minister Narendra Modi and others as they arrive at Air Force Station Palam. (Source: AP photo)

PM Narendra and US President Obama share some welcome notes as the latter lands at Palam Airport in New Delhi. (Source: PIB India)

Prime Minister Narendra Modi and US President Barack Obama ready for a hug as they greet each other. (Source: @MEAIndia)

US President Barack Obama receives a warm welcome from PM Narendra Modi at the Palam Airport, New Delhi. (Source: PIB India)

US President and Narendra Modi shake hands as they greet each other. (Source: PIB India)

Narendra Modi inviting Mr. & Mrs. Obama to pose for the cameras. (Source: PIB India)

Prime Minister Narendra Modi with visiting US President Barack Obama and first lady Michelle Obama wave upon for the cameras. (Source: AP photo)

Prime Minister Narendra Modi shakes hands with US President Barack Obama upon his arrival at Air Force station Palam. (Source: PTI photo)

PM Narendra Modi walks with visiting President Barack Obama as they leave Palam Airport to start the day. (Source: AP photo)

Prime Minister Narendra Modi leaves after receiving US President Barack Obama at Air Force station Palam, in New Delhi on Sunday. (Source: PTI Photo)

US President Barack Obama folds his hands in a traditional Indian greeting gesture during a ceremonial reception at the Rashtrapati Bhawan in New Delhi. (Source: Express photo by Neeraj Priyadarshi)

Barack Obama folds his hands in a traditional Indian greeting gesture, as Indian President Pranab Mukherjee, center, and Prime Minister Narendra Modi laugh during a ceremonial reception at the Rashtrapati Bhawan in New Delhi. (Source: AP photo)

US President Barack Obama, accompanied by WgCdr Pooja Thakur, inspects the guard of honour during a ceremonial reception at Rashtrapati Bhavan in New Delhi on Sunday. (Source: PTI Photo)

US President Barack Obama, accompanied by WgCdr Pooja Thakur, takes a walk through red carpet while inspecting the guard of honour at Rashtrapati Bhavan in New Delhi on Sunday. (Source: PTI Photo)

Wing Commander Pooja Thakur (Left) of the Inter Service Guard of Honour parttakes during the Presidential reception for the US President Barack Obama at the Rashtrapati Bhavan in New Delhi on sunday. (Source: Express Photo by Neeraj Priyadarshi)

US President Barack Obama inspects the guard of honour during a ceremonial reception at Rashtrapati Bhavan in New Delhi on Sunday. (Source: PTI Photo)

Prime Minister Narendra Modi receives President Pranab Mukherjee for the ceremonial welcome of US President Barack Obama at Rashtrapati Bhavan in New Delhi on Sunday. (Source: PTI Photo)

US President Barack Obama leaves from Rashtrapati Bhawan after meeting Indian President Pranab Mukherjee. (Source: Neeraj Priyadarshi)

US president Barack Obama at Rajghat in New Delhi on Sunday. (Source: Express photo by Amit Mehra)

Barack Obama paying homage to Mahatma Gandhi at the funerary monument Rajghat by offering a wreath. (Source: Express photo by Amit Mehra)

Barack Obama at Mahatma Gandhi's cremation memorial Rajghat in New Delhi. (Source: Amit Mehra)

During his three-day visit to India, US president also visited Rajghat, the funerary monument where Mahatma Gandhi was cremated, in New Delhi. (Source: Express photo by Amit Mehra)

The note in visitor's book, left by US President Barack Obama on his visit to Rajghat, New Delhi, as a part of his 3-day trip to India. (Source: Express photo)

US President Barack Obama and Prime Minister Narendra Modi wave for the shutterbugs outside the Hyderabad House in New Delhi. (Source: AP photo)

US President Barack Obama shakes hand with Prime Minister Narendra Modi outside Hyderabad House before a meeting in New Delhi. (Source: AP photo)

Seems our Prime Minister is discussing some highlights of the most-awaited Nuclear Deal with the visiting US President Mr. Barack Obama. (Source: Express photo by Renuka Puri)

Prime Minister Narendra Modi and visiting president Barack Obama walk through the gallery of Hyderabad House in New Delhi. (Source: Express photo by Renuka Puri)

NaMo and Mr. Obama waving to the viewers from outside Hyderabad House.

US President Barack Obama and Indian Prime Minister Narendra Modi walk into Hyderabad House for a meeting in New Delhi. (Source: AP Photo)

Sneak peek. Hyderabad House ready for PM Narendra Modi's meeting with US President Barack Obama. (Source: MEAIndia)

Prime Minister Narendra Modi with his Cabinet colleagues Rajnath Singh and M Venkaiah Naidu during the ceremonial welcome of US President Barack Obama at Rashtrapati Bhavan in New Delhi on Sunday. (Source: PTI Photo)

Prime Minister Narendra Modi in discussion with his Cabinet colleagues, Arun Jaitley, Rajnath Singh and others at Rashtrapati Bhavan in New Delhi on Sunday. (Source: PTI Photo)

US President Barack Obama paying tribute at Mahatma Gandhi's memorial Rajghat in New Delhi on Sunday. Power Minister Piyush Goyal is also seen. (Source: PTI Photo)

US President Barack Obama and President Pranab Mukherjee shake hands at a meeting at the Rashtrapati Bhavan in New Delhi on Sunday. (Source: PTI photo)

US President Barack Obama and Prime Minister Narendra Modi shake their hands after they jointly addressed the media after their talks, in New Delhi on Sunday. (Source: AP photo)

US President Barack Obama, addresses the media in New Delhi on Sunday. (Source: AP photo)

US President Barack Obama sits with Indian President Pranab Mukherjee, after he called on him at the presidential palace in New Delhi on Sunday. (Source: AP photo)

Prime Minister Narendra Modi and US President Barack Obama stroll in the gardens of Hyderabad House in New Delhi on Sunday. (Source: PTI photo)

Prime Minister Narendra Modi and US President Barack Obama during their talks over the tea at Hyderabad House in New Delhi on Sunday. (Source: PTI photo)