Israeli Declaration of Independence in the context of "Israel Defense Forces"

Aliyah (US: /ˌæliˈɑː/, UK: /ˌɑː-/; Hebrew: עֲלִיָּה, romanized: ălīyyā, lit. 'ascent') is the immigration of Jews from the diaspora to, historically, the geographical Land of Israel or the Palestine region, where in the 20th century the State of Israel was established. Traditionally described as "the act of going up" (towards the Jewish holy city of Jerusalem), moving to the Land of Israel or "making aliyah" is one of the most basic tenets of Zionism. The opposite action – emigration by Jews from the Land of Israel – is referred to in the Hebrew language as yerida (lit. 'descent'). The Law of Return that was passed by the Israeli parliament in 1950 gives all diaspora Jews, as well as their children and grandchildren, the right to relocate to Israel and acquire Israeli citizenship on the basis of connecting to their Jewish identity.

For much of their history, most Jews have lived in the diaspora outside of the Land of Israel due to various historical conflicts that led to their persecution alongside multiple instances of expulsions and exoduses. In the late 19th century, 99.7% of the world's Jews lived outside the region, with Jews representing 2–5% of the population of the Palestine region. Despite its historical value as a national aspiration for the Jewish people, aliyah was acted upon by few prior to the rise of a national awakening among Jews worldwide and the subsequent development of the Zionist movement in the late 19th century; the large-scale immigration of Jews to Palestine had consequently begun by 1882. Since the Israeli Declaration of Independence in 1948, more than 3 million Jews have made aliyah. As of 2014, Israel and the Israeli-occupied territories contain approximately 42.9 percent of the world's Jewish population.

East Jerusalem (Arabic: القدس الشرقية, romanized: al-Quds ash-Sharqiya; Hebrew: מִזְרַח יְרוּשָׁלַיִם, romanized: Mizraḥ Yerushalayim) is the portion of Jerusalem that was held by Jordan after the 1948 Arab–Israeli War, as opposed to West Jerusalem, which was held by Israel. Captured and occupied in 1967, this area was unilaterally annexed by Israel in 1980. The United Nations and other intergovernmental organizations consider East Jerusalem a part of the Palestinian territories according to international law, and under illegal occupation by Israel. Many states recognize East Jerusalem as the capital of the State of Palestine (such as Brazil, China, Russia, and all 57 members of the Organisation of Islamic Cooperation), whereas other states (such as Australia, France and others) assert that East Jerusalem "will be the capital of Palestine", while referring to it as "an occupied territory". In 2020, East Jerusalem had a population of 595,000 inhabitants, of whom 361,700 (61%) were Palestinian Arabs and 234,000 (39%) were Jewish Israelis. Israeli settlements in East Jerusalem are illegal under international law and in the eyes of the international community.

Jerusalem was envisaged as a separate, international city under the 1947 UN partition plan. It was, however, divided by the 1948 war that followed Israel's declaration of independence. As a result of the 1949 Armistice Agreements, the city's western half came under Israeli control, while its eastern half, containing the famed Old City, fell under Jordanian control, at the exception of Mount Scopus enclave. Israel occupied East Jerusalem during the 1967 Six-Day War; since then, the entire city has been under Israeli control. The 1980 Jerusalem Law declared unified Jerusalem the capital of Israel, formalizing the effective annexation of East Jerusalem. Palestinians and many in the international community consider East Jerusalem to be the future capital of the State of Palestine. The status of Jerusalem has been described as "one of the most intractable issues in the Israeli–Palestinian conflict", with conflicting claims to sovereignty over the city or parts of it, and access to its holy sites.

Palestinians (Arabic: الفلسطينيون, romanized: al-Filasṭīniyyūn) are an Arab ethnonational group native to the Levantine region of Palestine. They represent a highly homogeneous community who share a cultural and ethnic identity, speak Palestinian Arabic and share close religious, linguistic, and cultural ties with other Levantine Arabs.

In 1919, Palestinian Muslims and Christians constituted 90 percent of the population of Palestine, just before the third wave of Jewish immigration and the setting up of British Mandatory Palestine after World War I. Opposition to Jewish immigration spurred the consolidation of a unified national identity, though Palestinian society was still fragmented by regional, class, religious, and family differences. The history of the Palestinian national identity is a disputed issue amongst scholars. For some, the term "Palestinian" is used to refer to the nationalist concept of a Palestinian people by Palestinian Arabs from the late 19th century and in the pre-World War I period, while others assert the Palestinian identity encompasses the heritage of all eras from biblical times up to the Ottoman period. After the Israeli Declaration of Independence, the 1948 Palestinian expulsion, and more so after the 1967 Palestinian exodus, the term "Palestinian" evolved into a sense of a shared future in the form of aspirations for a Palestinian state. Though the concept of Palestinian citizenship for the purpose of international law has been revived, the in fieri realization of self-determination is still insufficient, thus Palestinians remain over the threshold of eligibility to receive international protection as refugees and stateless persons.

Israeli law is based mostly on a common law legal system, though it also reflects the diverse history of the territory of the State of Israel throughout the last hundred years (which was at various times prior to independence under Ottoman, then British sovereignty), as well as the legal systems of its major religious communities. The Israeli legal system is based on common law, which also incorporates facets of civil law. The Israeli Declaration of Independence asserted that a formal constitution would be written, though it has been continuously postponed since 1950. Instead, the Basic Laws of Israel (Hebrew: חוקי היסוד, romanized: ḥuqe ha-yesod) function as the country's constitutional laws. Statutes enacted by the Knesset, particularly the Basic Laws, provide a framework which is enriched by political precedent and jurisprudence. Foreign and historical influences on modern-day Israeli law are varied and include the Mecelle (Hebrew: מג'לה; the civil code of the Ottoman Empire) and German civil law, religious law (Jewish Halakha and Muslim Sharia; mostly pertaining in the area of family law), and British common law. The Israeli courts have been influenced in recent years by American Law and Canadian Law and to a lesser extent by Continental Law (mostly from Germany).

The Israeli annexation of East Jerusalem, known to Israelis as the reunification of Jerusalem, refers to the Israeli occupation of East Jerusalem during the 1967 Six-Day War, and its annexation.

Jerusalem was envisaged as a separate, international city under the 1947 United Nations partition plan, but it was divided by the 1948 war that followed Israel's declaration of independence. As a result of the 1949 Armistice Agreements, the city's western half came under Israeli control, while its eastern half, containing the Old City, fell under Jordanian control. In 1950, Jordan annexed East Jerusalem as part of its larger annexation of the West Bank.

The 1948 Arab–Israeli War, also known as the First Arab–Israeli War, followed the civil war in Mandatory Palestine as the second and final stage of the 1948 Palestine war. The civil war became a war of separate states with the Israeli Declaration of Independence on 14 May 1948, the end of the British Mandate for Palestine at midnight, and the entry of a military coalition of Arab states into the territory of Mandatory Palestine the following morning. The war formally ended with the 1949 Armistice Agreements which established the Green Line.

Since the 1917 Balfour Declaration and the 1920 creation of the British Mandate of Palestine, and in the context of Zionism and the mass migration of European Jews to Palestine, there had been tension and conflict between Arabs, Jews, and the British in Palestine. The conflict escalated into a civil war 30 November 1947, the day after the United Nations adopted the Partition Plan for Palestine proposing to divide the territory into an Arab state, a Jewish state, and an internationally administered corpus separatum for the cities of Jerusalem and Bethlehem.