Pride Parade, Tel Aviv, Israel

Arab nationalists led by Egyptian President Gamal Abdel Nasser refused to recognize Israel, calling for its destruction. By 1966, Israeli-Arab relations had deteriorated to the point of actual battles taking place between official Israeli and Arab forces. In 1967, Egypt expelled UN peacekeepers, stationed in the Sinai Peninsula since 1957, and announced a partial blockade of Israel's access to the Red Sea. Israel saw these actions as a casus belli for a pre-emptive strike that launched the Six-Day War, in which Israel achieved a decisive victory and captured the West Bank, Gaza Strip, Sinai Peninsula and Golan Heights. Jerusalem's boundaries were enlarged, incorporating East Jerusalem, and the 1949 Green Line became the administrative boundary between Israel and the occupied territories.
The failure of the Arab states in the 1967 war led Arab non-state actors to have a more central role in the conflict. Most important among them is the Palestinian Liberation Organization (PLO), established in 1964, which initially committed itself to "armed struggle as the only way to liberate the homeland". In the late 1960s and early 1970s, Palestinian groups launched a wave of attacks against Israeli targets around the world, including a massacre of Israeli athletes at the 1972 Summer Olympics in Munich.
On October 6, 1973, as Jews were observing Yom Kippur, the Egyptian and Syrian armies launched a surprise attack against Israel. The war ended on October 26 with Israel successfully repelling Egyptian and Syrian forces but suffering great losses. An internal inquiry exonerated the government of responsibility for failures before and during the war, but public anger forced Prime Minister Golda Meir to resign.
The 1977 Knesset elections marked a major turning point in Israeli political history as Menachem Begin's Likud party took control from the Labor Party. Later that year, Egyptian President Anwar El Sadat made a trip to Israel and spoke before the Knesset in what was the first recognition of Israel by an Arab head of state. In the two years that followed, Sadat and Menachem Begin signed the Camp David Accords and the Israel-Egypt Peace Treaty. Israel withdrew from the Sinai Peninsula and agreed to enter negotiations over an autonomy for Palestinians in the West Bank and the Gaza Strip. Begin's government encouraged Israelis to settle in the West Bank, leading to friction with the Palestinians in that area.