As President Obama prepares for his historic speech in Cairo next week, he faces a dual challenge–not only to redefine the troubled relations between the United States and the Muslim world, but also to clarify the place of democracy and human rights in his administration’s foreign policy. The former would have been the centerpiece of his first speech in an Islamic nation no matter where he had chosen to deliver it. But it was the selection of Egypt as his venue that made the latter unavoidable.