Egyptian President Anwar el-Sadat and Israeli Prime Minister Menachem Begin sign two frameworks for peace in Washington, D.C. Negotiated at U.S. President Jimmy Carter's Camp David retreat, it was the first peace accord between Israel and one of its Arab neighbors. Six months later, a formal peace treaty was signed at the White House, ending three decades of hostilities between Egypt and Israel, and establishing diplomatic and commercial ties. For their achievement, Sadat and Begin were awarded a joint Nobel Peace Prize. However, Sadat's peace efforts were not so highly acclaimed in the Arab world, and he was assassinated in 1981 by Muslim extremists in Cairo.