On May 14, 1948, the first Arab-Israeli war broke out when five Arab countries invaded Palestine, immediately after the independence of Israel as a state.
Balfour Declaration (1917)
After World War II, Britain had released a public statement supporting a national home for Jewish people in Palestine under the Balfour Declaration. Followed by the Holocaust and a diaspora of Jewish people, and the advocacy of a home for jewish people by Zionist organizations.
Jewish Migration (1920-1946)
Jewish migration to Palestine had been increasing in the 20th century, and spiked after the creation of Israel. Between 1918 and 1947, the Palestine-Jewish population increased from six percent to 33 percent. In the late 19th century, The rise of Zionism occurred. Zionism was the belief in the creation of a Jewish homeland in Palestine, which led to the rise of Zionist organizations that advocated for a home for Jews in Palestine. During the migration, armed Zionists began to attack Palestinians forcing them to flee their homes, so they could occupy the land for the Jews.
UN Partition Plan (1947)
While violence continued in Palestine, the issue was brought before the United Nations and the Resolution 181, also known as the Partition Plan, was adopted in 1947. It was made to divide the British Mandate of Palestine into two separate states. The mandate was put in place to give Jews and Arabs their own lands, in an effort to prevent violence. In 1948 Britain chose to pull out of the area, leaving Palestinians and Israelis to determine land division on their own. Israel was declared independent before the British left, leaving Palestine without any protection.
The partition of Israel and Palestine had created two separated areas of Palestinian land, with Israel surrounding both, making Palestine having to fight a two front war and Israel began pushing into the land.
The Nakba (May 1948)
This was the first Arab-Israeli war. The war ended in 1949 with Israel taking the victory.
In Feb. through July of 1949 Israel signed armistice agreements with 4 Arab states; Egypt, Jordan, Lebanon and Syria. All negotiations were made under the United Nations (UN) by Ralph Bunche, the agreements later earned him a Nobel Peace Prize in 1949. These agreements marked the separation of land with the agreement that both sides would respect the new borders. As a result, the land was divided into 3 parts: Israel, and the West Bank of Jordan river and the Gaza strip.
Despite the armistice agreements and end of first the official war, conflict and violence continued between the two sides. Zionist militias and organizations had continued to try and push Palestinians out, and the Palestinian state had degraded significantly even after the new land agreements. Decades of discrimination and mistreatment had built tensions between the sides that would prove impossible to smooth over.
The Suez Canal Crisis in 1956 did not directly involve Palestine, but was another Arab-Israeli conflict as Israel fought against Egypt. New resolutions were put into place, an attempt to prevent more conflicts in the area, which would prove to be a failure as the next war would occur in 1967.
In 1967 the Arab-Israeli war began, ending the armistice agreements. Israel began to receive military support from the U.S, soon beating the other Arab states and fully occupying Palestinian land. Israel refused to pull out and began setting up illegal Jewish settlements.
In the same year the Security Council Resolution 242 ended the war, calling for acknowledgement of state sovereignty and independence. This worked to appease both sides, but both interpreted this clause differently, in their own favor. The resolution also called for the withdrawal of Israeli troops from Palestine, and was passed unanimously. While the resolution was never fully enforced, nor did it address Palestine by name, it would become the basis for negotiations and diplomatic relations for the countries involved.