In 1975, Israel signed the Sinai disengagement pact with Egypt. The agreement called for Israel to withdraw from the Sinai passes captured in the 1973 Yom Kippur War, leaving them as a demilitarized zone monitored by American and United Nations observers. Israel had previously withdrawn from the Sinai in 1956, and would eventually withdraw permanently in 1982 following the Camp David agreement between Anwar Sadat and Menachem Begin.