Israeli occupation of the Sinai Peninsula in the context of "Operation Badr (1973)"

Israel has occupied the Palestinian territories and the Golan Heights of Syria since the Six-Day War of 1967. It has previously occupied the Sinai Peninsula of Egypt and southern Lebanon as well. Prior to 1967, control of the Palestinian territories was split between Egypt and Jordan, which administered the Gaza Strip and the West Bank, respectively. The Israeli occupation of the Palestinian territories and the Golan Heights, where Israel has transferred parts of its population and built large settlements, is the longest military occupation in modern history.

From 1967 to 1981, the four areas were administered under the Israeli Military Governorate, and after the return of the Sinai Peninsula to Egypt after the Egypt–Israel peace treaty, Israel effectively annexed the Golan Heights and East Jerusalem in 1980, and brought the rest of the West Bank and the Gaza Strip under the Israeli Civil Administration.

Gamal Abdel Nasser Hussein (15 January 1918 – 28 September 1970) was an Egyptian military officer and revolutionary who served as the second president of Egypt from 1954 until his death in 1970. Nasser led the Egyptian revolution of 1952 and introduced far-reaching land reforms the following year. Following a 1954 assassination attempt on his life by a Muslim Brotherhood member, he cracked down on the organization, put President Mohamed Naguib under house arrest and assumed executive office. He was formally elected president in June 1956.

Nasser's popularity in Egypt and the Arab world skyrocketed after his nationalization of the Suez Canal and his political victory in the subsequent Suez Crisis, known in Egypt as the Tripartite Aggression. Calls for pan-Arab unity under his leadership increased, culminating with the formation of the United Arab Republic with Syria from 1958 to 1961. In 1962, Nasser began a series of major socialist measures and modernization reforms in Egypt. Despite setbacks to his pan-Arabist cause, by 1963 Nasser's supporters gained power in several Arab countries, but he became embroiled in the North Yemen Civil War, and eventually the much larger Arab Cold War. He began his second presidential term in March 1965 after his political opponents were banned from running. Following Egypt's defeat by Israel in the Six-Day War of 1967, Nasser resigned, but he returned to office after popular demonstrations called for his reinstatement. By 1968, Nasser had appointed himself prime minister, launched the War of Attrition to regain the Israeli-occupied Sinai Peninsula, begun a process of depoliticizing the military, and issued a set of political liberalization reforms. After the conclusion of the 1970 Arab League summit, Nasser suffered a heart attack and died. His funeral in Cairo drew five to six million mourners, and prompted an outpouring of grief across the Arab world.

Israeli passage through the Suez Canal and Straits of Tiran was restricted by Egypt, in cooperation with Saudi Arabia, for much of the time between the 1948 Arab–Israeli War and the 1967 Six-Day War. Since the Egypt–Israel peace treaty of 1979, Israel has enjoyed freedom of navigation through the Suez Canal and the Straits of Tiran.

Egypt was one of the main Arab countries that invaded Israel after the Israeli Declaration of Independence, sparking the 1948 Arab–Israeli War. Although the Egyptians were defeated during this conflict, they managed to occupy what would become known as the Gaza Strip and did not recognize Israel as a sovereign state following the 1949 Armistice Agreements. The ceasefire between the two countries was being tested by the Egypt-based Palestinian Fedayeen insurgency, which was prompting Israeli reprisal operations. Egypt had closed the Suez Canal and the Straits of Tiran to all Israeli vessels in 1949, preventing imports and exports amidst Israel's austerity period. Tensions worsened as the Egyptians gradually strengthened their blockade of Israel, culminating in the Suez Crisis of 1956, during which Israel invaded Egypt's Sinai Peninsula in order to force a re-opening of the blockaded waters, though the Suez Canal was closed until 1957, when Israeli troops withdrew from Egypt. However, in the mid-1960s, Egypt imposed another blockade against Israel, which had declared that any such action would be a casus belli. The Egyptian military subsequently mobilized along Israel's border and expelled the United Nations Emergency Force, leading to the Six-Day War of 1967, which ended in an Egyptian defeat and the Israeli occupation of the Sinai Peninsula. Following the outbreak of hostilities in 1967, the Suez Canal was closed until 1975. In 1973, Egypt attempted to retake the Sinai Peninsula by force, triggering the Yom Kippur War; although the initial Egyptian offensive was successful, the conflict ended in an Israeli victory. In 1979, Egypt became the first Arab country to recognize Israel as part of a bilateral peace treaty, in exchange for which Israel withdrew from the Sinai Peninsula in 1982. The two countries have remained at peace since 1979, and the overall Egypt–Israel relationship is generally cordial and cooperative.

The Six-Day War, or the 1967 Arab–Israeli war (5–10 June 1967), was fought between Israel and a coalition of Arab states, primarily Egypt, Syria, and Jordan within the context of the Arab–Israeli conflict. In the war, Israel captured and occupied the West Bank (including East Jerusalem) from Jordan, the Gaza Strip and the Sinai Peninsula from Egypt, and the Golan Heights from Syria.

Military hostilities broke out amid poor relations between Israel and its Arab neighbors, who had been observing the 1949 Armistice Agreements signed at the end of the First Arab–Israeli War. In 1956, regional tensions over the Straits of Tiran (giving access to Eilat, a port on the southeast tip of Israel) escalated in what became known as the Suez Crisis, when Israel invaded Egypt over the Egyptian closure of maritime passageways to Israeli shipping, ultimately resulting in the re-opening of the Straits of Tiran to Israel as well as the deployment of the United Nations Emergency Force (UNEF) along the Egypt–Israel border.

On 6 June 1967, after the start of the Six-Day War, Egypt closed the Suez Canal, which it owned and operated, and kept it closed until 5 June 1975, through most of the Israeli occupation of the Sinai Peninsula including the east bank of the Canal.

The Six-Day War had begun the day before the closure on 5 June 1967 between Israel and several Arab states including Egypt. Israel bombed most of Egypt's airfields and then entered and occupied the Sinai Peninsula including the entire east bank of the Suez Canal.