Sinai Peninsula
The Sinai Peninsula is the triangular Egyptian landmass between the Suez Canal and the Red Sea that was captured by Israel in the 1967 Six-Day War and returned to Egypt under the 1979 Camp David Peace Treaty; it appears in this vault primarily as the theater of the 1973 Yom Kippur War's initial Egyptian crossing that constituted a major CIA and Israeli intelligence failure.
The Sinai Peninsula is a triangular landmass of approximately 60,000 square kilometers connecting the African and Asian continents, bounded by the Suez Canal and the Gulf of Suez to the west and the Gulf of Aqaba to the east. It is administered as part of Egypt but is geographically distinct from the African mainland. The peninsula's terrain ranges from the desert coastal plains of the north to the red granite mountains of the south, including Mount Sinai (Jabal Musa), significant in the Abrahamic religious traditions as the site of the Mosaic covenant. The Sinai's permanent civilian population is approximately 600,000, largely concentrated in the northern coastal strip.1
Six-Day War Capture (1967)
Israeli forces captured the entire Sinai Peninsula during the Six-Day War of June 5-10, 1967, in a rapid armored advance following the Israeli Air Force's preemptive destruction of the Egyptian, Jordanian, and Syrian air forces on the morning of June 5. The advance reached the Suez Canal by June 8. The Canal was subsequently closed to international shipping and remained closed until 1975. Israel established military administration of the Sinai and began developing infrastructure including roads, airfields, and eventually civilian settlements, particularly in the northeastern corner near Gaza and on the Gulf of Aqaba coast at Sharm el-Sheikh.2
The Bar-Lev Line - a series of fortified positions along the Canal's eastern bank constructed 1968-1969 - was Israel's primary defensive line in the Sinai. Its construction reflected an Israeli strategic decision to hold the Canal as a defensive barrier rather than return it to Egypt in exchange for a peace agreement.
The 1973 Yom Kippur War and Intelligence Failure
The Sinai was the western theater of the October 1973 Yom Kippur War (also called the October War or Ramadan War), which began with a coordinated Egyptian-Syrian surprise attack on October 6, 1973, the Jewish holiday of Yom Kippur. Egyptian forces crossed the Canal in a meticulously planned operation, breached the Bar-Lev Line using high-pressure water hoses to destroy the sand fortifications, and advanced into the Sinai before Israeli reserves could mobilize.
The Egyptian crossing constituted one of the most consequential intelligence failures of the Cold War for both Israel and the CIA. Egyptian President Anwar Sadat had executed an elaborate strategic deception - including a history of mobilizations that were subsequently stood down - that had trained Israeli and U.S. intelligence analysts to discount Egyptian military movements. The Israeli military intelligence directorate (Aman) maintained a doctrine (known informally as "the Concept") that held Egypt would not attack until it had acquired certain weapons systems, a doctrine that filtered out warning indicators. CIA Director William Colby later acknowledged that the CIA's finished intelligence had failed to warn of the imminent attack, and that the Agency had relied too heavily on Israeli assessments.
Israeli forces stabilized the Sinai front by October 9-10 and subsequently counterattacked, crossing the Canal on October 15-16 and encircling the Egyptian Third Army by the ceasefire of October 25. The war ended with Israel holding a westbank Canal bridgehead in addition to the Sinai.1
Return to Egypt Under Camp David
The 1978 Camp David Accords negotiated by U.S. President Jimmy Carter between Egyptian President Anwar Sadat and Israeli Prime Minister Menachem Begin included Israeli withdrawal from the entire Sinai in exchange for Egyptian recognition of Israel and a peace treaty. The withdrawal was completed in stages: partial withdrawal under the 1975 Sinai II interim agreement, then full withdrawal completed April 25, 1982, including the demolition of the Israeli settlement at Yamit. Egypt regained full sovereignty over the peninsula for the first time since 1967.
A multinational peacekeeping force (the Multinational Force and Observers, MFO) was established in the Sinai to monitor the treaty's military provisions, with a U.S. contingent as the largest contributing nation. The MFO has operated continuously since 1982.2
Sources
Local network
Sinai Peninsula's direct connections. Click any node to navigate, drag to pan, scroll (or pinch) to zoom. + 2‑hop expands the neighborhood one level further.