Eric Trager's understanding of Egypt's Muslim Brotherhood:
My own view is that the administration is correct in seeing no real alternative to Morsi, but wrong in believing that Morsi or the Muslim Brotherhood can be partners on foreign policy in the long run. In recent months, the Muslim Brotherhood has signaled repeatedly that it intends to move against our interests: the group's Supreme Guide has called for jihad for Jerusalem twice in the past two months, including right after the Gaza ceasefire; a top foreign policy official declared in November that Morsi is ending normalization with Israel slowly; and the Brotherhood's political party has been drafting legislation for the next parliamentary session on unilaterally amending the treaty.
Moreover, it's worth noting that the Brotherhood repeatedly turns on its allies. (Consider, for example, the case of April 6th Youth leader Ahmed Maher, who prominently supported Morsi during the second round of the presidential elections but, after opposing Morsi's power grab, was accused by the Brotherhood of leading "thugs" in demonstrations.) If the Brotherhood has no qualms about turning on its most prominent non-Brotherhood supporters within Egypt, it will have even few qualms about turning on America.
(Photo: Egyptian riot police cordon off all access to the road leading to the police station in Cairo's Doqqi neighbourhood on December 16, 2012. Islamists backing a new constitution for Egypt claimed victory in an initial phase of a referendum, but the opposition alleged polling violations and said it will await the results from the final round in a week's time. By Gianluigi Guerica/AFP/Getty Images)