"Our diversity is not a weakness," says Obama

President Barack Obama urged Americans to embrace the diversity of the United States and do not allow the terrorism divide the country on the occasion of the 15th anniversary of the attacks of September 11, 2001.

"Our diversity, our multicultural heritage, not a weakness. It is still and will always be one of our great strengths," Obama said at the ceremony organized at the Pentagon, one of the targets of the attacks that left nearly 3,000 dead, most of New York .