He also visited Brazil's famed City of God slum as the biggest military intervention in the Arab world since the Iraq invasion entered its second day.
The President's wife Michelle and daughters joined him on the five-day visit to Latin America prompting the trip to be branded a 'vacation' by right-wingers.

President Barack Obama with first lady Michelle Obama and daughters Malia and Sasha spent their final night in Brazil touring the Christ the Redeemer Statue in Rio de Janeiro
Republican Newt Gingrich has mocked Mr Obama for his lack of leadership over Libya by publicising his final four March Madness picks as rebels battled for their country.
During his sightseeing tour of the slum, Obama kicked a soccer ball with pint-sized boys and swayed to the beat of a samba performance at a makeshift community centre.
Residents crowded sidewalks, rooftops and balconies to wave as Obama's shining black SUV rolled through the narrow streets.