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US President Barack Obama waves as he arrives onto the stage to deliver his highly-anticipated address to the Muslim world on June 4, 2009 in the Grand Hall of Cairo University in Cairo. US President Barack Obama discussed Middle East peace with his Egyptian host on Thursday ahead of a much-heralded address to the world's Muslims, seeking to heal a wide rift between America and Islam. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

US President Barack Obama waves as he arrives onto the stage to deliver his highly-anticipated address to the Muslim world on June 4, 2009 in the Grand Hall of Cairo University in Cairo. US President Barack Obama discussed Middle East peace with his Egyptian host on Thursday ahead of a much-heralded address to the world's Muslims, seeking to heal a wide rift between America and Islam. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)