President Clinton presides over ceremonies marking the signing of the 1993 peace accord between Israel and the Palestinians, with Israeli Prime Minister Yitzhak Rabin, left, and PLO chairman Yasser Arafat, right in this Sept. 13, 1993 file photo in Washington. For U.S. presidents seeking Mideast pace, the devil has always been in the details. (AP Photo/Ron Edmonds, File)