Sinai Peninsula

Overview

The Sinai Peninsula is a triangular region of Egypt that forms the land bridge between Africa and Asia. Its western edge follows the Suez Canal and Gulf of Suez; its eastern edge faces Israel and the Gulf of Aqaba. This position gives Sinai importance far beyond its relatively sparse population. Control of the peninsula affects passage near one of the world’s principal shipping routes, access to the Red Sea, and the security of the Egypt–Israel border. Its deserts and mountains have also made it a difficult place to govern and defend.^[1]

Sinai has been under Egyptian sovereignty for most of its modern history. Israel controlled it after the 1967 Six-Day War, then removed its forces and communities under the peace settlement with Egypt. Israel completed its withdrawal in 1982, restoring full Egyptian sovereignty. The agreement paired withdrawal with limits on Egyptian military deployments, monitoring, and guarantees of navigation. Those arrangements preserved warning time and a security buffer for Israel while enabling a durable peace between the two countries.^[7][12][13]

Since Egypt’s 2011 uprising, North Sinai has also been a center of jihadi violence. The terrorist organization Ansar Bayt al-Maqdis became Islamic State – Sinai Province in 2014. Its attacks killed Egyptian soldiers and civilians, threatened Copts and other local communities, and reached across the border toward Israel. Egypt’s campaign against the group has involved Bedouin tribes and security cooperation with Israel.^[8][1][4]

Geography

Sinai covers roughly 23,000 square miles, or 60,000 square kilometers. The Mediterranean Sea borders it to the north, while the Red Sea lies to the south. The Suez Canal and Gulf of Suez define its western side; Israel and the Gulf of Aqaba lie to the east. Northern Sinai consists largely of Mediterranean coastal plains, the center is desert, and the south rises into rugged mountains. The peninsula’s shape and location make it a route between Egypt’s African heartland and the eastern Mediterranean, as well as a buffer beside Israel.^[1]

The canal’s position at Sinai’s western edge links the Mediterranean and Red seas and makes the surrounding region vital to international shipping. On the opposite side, the Gulf of Aqaba leads toward the Straits of Tiran. Freedom of navigation through those straits became a central Israeli security concern in the years before the Six-Day War and remained part of the later peace arrangements. The peninsula’s long borders, remote terrain, and limited settlement also complicate policing. Routes through Sinai have carried legitimate travel and trade, but have also been used to move weapons and fighters between Gaza and Egypt.^[1][13][6]

Bedouin communities form much of Sinai’s population, particularly outside its larger towns and tourist centers. Tribal relationships matter to local security: jihadi organizations have recruited through some tribal networks, while other tribes have worked with Egyptian forces against them. Egyptian plans to expand infrastructure and welfare services for Bedouin communities reflected recognition that lasting security depends partly on conditions in the places where residents live.^[1][8]

Ancient and biblical history

Sinai’s position between the Nile Valley and western Asia made it strategically important to ancient Egypt. Egyptian rulers controlled routes across the peninsula and used its eastern approaches to connect Egypt with neighboring lands. The region’s geography also made it a passage between settled centers and desert areas. Its political importance as Egypt’s northeastern gateway long predates the modern Suez Canal and the contemporary border with Israel.^[1]

Sinai holds a central place in the Hebrew Bible. In the account of the Israelites’ exodus from Egypt, Moses led them through the wilderness and received the Ten Commandments on Mount Sinai. That narrative made the mountain and peninsula enduring places in Jewish religious memory. The biblical account identifies Sinai as the setting of the covenant and the giving of the law; it does not establish a modern national boundary or identify every location mentioned in the narrative with certainty.

The peninsula’s biblical significance extends beyond one mountain. The account of movement from Egypt toward the Land of Israel made Sinai a landscape of departure, wandering, and religious formation. These associations remain part of its cultural history even as modern Sinai is governed by Egypt and inhabited by communities with their own histories.^[1]

Jewish history

Sinai’s modern Jewish history is closely tied to Israel’s wars for survival and its eventual peace with Egypt. During the 1948 Arab–Israeli War, Egypt’s participation made Sinai part of the strategic approaches to Israel’s southern border. The fighting also displaced large numbers of Arabs across the region. About 700,000 to 750,000 left areas affected by the war, while about 156,000 to 158,000 remained in Israel; some of those who left moved to Egypt and the Sinai Peninsula. Their movement was one part of a wider regional upheaval that also reached Lebanon, Syria, Jordan, Judea and Samaria, and Gaza.

In 1956, Israeli forces campaigned across Sinai during the Suez Crisis. The Israel Defense Forces completed their conquest of the peninsula without reaching the Suez Canal. British and French air forces joined the offensive against Egyptian forces on October 31, two days after Israel’s attack began. Pressure from the United States and Soviet Union brought the campaign to an end. Britain and France withdrew their forces in December 1956, and Israel completed its withdrawal from Sinai in March 1957. The crisis demonstrated how quickly a confrontation on Israel’s border could become an international struggle over the peninsula and canal.^[10][11]

After Israel gained control of Sinai in the 1967 Six-Day War, thousands of Israelis established communities there, including along the Mediterranean coast and Gulf of Aqaba. These were homes and civic communities as well as strategic footholds. Their removal later became one of the most difficult practical and political parts of peace with Egypt. Prime Minister Menachem Begin accepted evacuation as part of the settlement with President Anwar Sadat, and Ariel Sharon supported that decision and later carried out removals, including some by force.^[12][7]

Modern history

The confrontation that led to the Six-Day War intensified in May 1967. Egyptian President Gamal Abdel Nasser moved troops into Sinai beginning on May 15, demanded the withdrawal of the United Nations Emergency Force, and closed the Straits of Tiran to Israeli shipping. Israel had made clear that closing the straits crossed a red line. Nasser’s mass deployment also violated the demilitarization understandings reached after the 1956 war. Israeli intelligence eventually assessed that Egypt was prepared for confrontation, rather than treating its deployment as solely defensive. Israel struck Egyptian air forces on June 5 and took control of Sinai during the war.^[13]

Sinai remained central to subsequent Israel–Egypt fighting. Egyptian forces crossed the canal at the opening of the 1973 Yom Kippur War; by the morning of October 7, Israel’s Southern Command had few forces positioned to stop a deeper Egyptian advance into the peninsula. Later disengagement agreements reduced tensions but did not settle the question of sovereignty. Sadat remained dissatisfied after the Sinai II agreement because Egypt had not recovered all the territory it sought.

The United States-mediated Camp David Accords opened the path to an Egypt–Israel peace treaty. Begin agreed to return the strategically important peninsula in exchange for Sadat’s commitment to peace. The accords themselves did not specifically address Israeli communities; the later treaty required their removal. Israel made security arrangements a condition of withdrawal. Annex I of the treaty restricted Egyptian military activity and deployments in Sinai, creating a buffer and preserving warning time against a renewed Egyptian threat. The settlement also provided for international monitoring and freedom of navigation through the Straits of Tiran.^[7][12]

Israel removed its citizens, military bases, and other strategic assets from Sinai and completed its treaty-mandated withdrawal in 1982. Full Egyptian sovereignty was restored. The Reagan administration described the withdrawal as a major Israeli sacrifice and recognized the risks taken for peace. Egypt marks April 25 as Sinai Liberation Day; in 2015 it observed the thirty-third anniversary of the return of most of the peninsula following the treaty. The Multinational Force and Observers began its deployment in 1982 to monitor implementation of the security arrangements, including restrictions on forces in Sinai and arrangements concerning Tiran.^[7][12]

Security

Egypt’s 2011 uprising weakened state control in parts of Sinai and gave jihadi organizations more room to operate. Ansar Bayt al-Maqdis formed in that setting, drawing members from local Bedouin communities, Gaza residents, and veterans of Hamas, a terrorist organization. Some leaders came from the Sawarka and Ramailat tribes and used tribal ties to recruit and obtain support. Violence against Egyptian troops continued through the turmoil surrounding Mohamed Morsi’s presidency and removal. The organization also developed connections across the Sinai–Gaza boundary.^[5][8][6]

On October 24, 2014, Ansar Bayt al-Maqdis attacked an Egyptian military checkpoint with a vehicle bomb and small arms, killing more than 30 soldiers. On November 10, it pledged allegiance to the Islamic State and renamed itself Wilayat Sinai, or Islamic State – Sinai Province. During the following year, attacks in Sinai rose by about 130 percent and fatalities by about 250 percent. By late 2015, the group had become a paramilitary force capable of larger, more frequent, and more complex operations. Its growth posed a threat to Egyptian towns and security personnel as well as to Israel’s nearby civilian communities and military positions.^[8]

Major attacks showed the scale of that threat. On January 29, 2015, armed groups struck military and police targets around el-Arish and Sheikh Zuweid, killing 32 people. On July 1, hundreds of Wilayat Sinai fighters attempted to seize Sheikh Zuweid, North Sinai’s third-largest city. Their assault included a car bomb and attacks on seven Egyptian security checkpoints; an estimated 70 Egyptian security personnel were killed. The group also temporarily seized four nearby villages after the Rabaa assault, which Egyptian forces retook after nearly three months of fighting. These operations forced Egypt to confront an organized insurgency rather than isolated attacks.^[8][9]

Civilians suffered some of the deadliest attacks. In October 2015, Wilayat Sinai bombed a Russian passenger aircraft shortly after it departed Sharm el-Sheikh, killing all 224 passengers and crew. On November 24, 2017, gunmen attacked worshippers at al-Rawda mosque in North Sinai, killing more than 300 people. The Islamic State’s Sinai affiliate was identified as the apparent perpetrator, although no organization claimed responsibility. By spring 2017, Islamic State had designated churches and Christian sites in Egypt and northern Sinai as preferred targets. Attacks and threats drove hundreds of Copts from el-Arish toward other cities, especially Ismailiyah; Egyptian Prime Minister Sharif Ismail ordered an operations room to assist displaced families. Terrorist groups killed at least two Coptic civilians in Sinai in August 2022, reportedly because of their religious identity.^[15][8]

Sinai’s security crisis also crossed borders. Smuggling networks carried heavier weapons from Iran through Sudan and Sinai toward Gaza, alongside smaller arms arriving from Libya. A planned route for the Klos-C weapons shipment ran through Port Sudan and overland across Sinai into Gaza. Egyptian operations in August 2012 focused partly on destroying tunnels and reinforcing forces near Rafah. In early 2017, Egypt reached initial understandings with Hamas to stop movement of weapons and fighters between Gaza and Sinai. These routes made border control a shared Egyptian and Israeli concern.^[1][6][14]

Jihadi groups also attacked Israel from Sinai. An Egyptian and a Saudi national infiltrated southern Israel on June 18, 2012, and killed an Israeli worker. During hostilities that November, Majlis Shura Fi Aknaf Bayt al-Maqdis claimed five rocket launches from northern Sinai toward Israel; it and Jama’at Ansar Bayt al-Maqdis maintained cells in both Sinai and Gaza. On July 3, 2015, Wilayat Sinai fired three Grad rockets from northwestern Sinai toward populated areas of Israel’s western Negev. Israeli forces prepared for further attacks on border communities and military positions. The cross-border threat was one reason Israel supplied Egypt with intelligence and, at times, air support for counterterrorism operations.^[5][6][8][4]

Present day

Egypt’s campaign degraded Wilayat Sinai, although elements of the Islamic State affiliate remained active. Egyptian forces expanded operations over years of fighting, while the government enlisted a coalition of Sinai Bedouin tribes against jihadi organizations and planned infrastructure and welfare projects for their communities. The campaign demonstrated the importance of local cooperation: tribal networks could assist either insurgents or the state, and civilians faced direct danger from both attacks and prolonged insecurity.^[1][9]

Egypt and Israel have maintained tactical security cooperation under President Abdel Fattah el-Sisi. Israel has generally approved Egyptian requests since 2012 for temporary, large-scale armored deployments beyond treaty limits to confront threats in Sinai. El-Sisi disclosed in March 2023 that he had sought and received Israeli approval in 2011 to deploy forces to el-Arish, Rafah, and Sheikh Zuweid. By early 2018, about 42,000 Egyptian soldiers in 88 battalions were operating in Sinai with Israel’s assent. Egyptian official media nevertheless accused Israel of aiding attacks against Egypt even while the two governments cooperated on security.^[1][4]

Expanded deployments have kept the treaty’s military limits relevant. As Israel prepared operations near Rafah, Egypt moved about 40 tanks and armored personnel carriers into northeastern Sinai near the border. In January 2025, Israeli ambassador Yechiel Leiter raised concerns that Egyptian military construction in Sinai breached the 1979 treaty. The enduring question is how Egypt can maintain effective security against jihadi groups while preserving the monitored buffer that enabled Israel’s 1982 withdrawal. Sinai remains both an Egyptian region and a central test of the peace and security arrangements between Egypt and Israel.^[1][7]