Egyptian President Anwar Sadat, left, President Jimmy Carter, center, and Israeli Prime Minister Menachem Begin clasp hands on the north lawn of the White House after signing the peace treaty between Egypt and Israel in this March 26, 1979 photo. The 13 days of negotiations required to establish the treaty will be surpassed when Israeli and Palestinian negotiators enter their 14th day of talks at the Presidential retreat. (AP Photo/ Bob Daugherty)