Lehi (militant group) in the context of "Zionist political violence"

The Israel Defense Forces (IDF; Hebrew: צבא הגנה לישראל, romanized: Tsva Hagana le-Yisra'el, lit. 'Army for the Defense of Israel'), alternatively referred to by the Hebrew-language acronym Tzahal (צה״ל), is the national military of the State of Israel. It consists of three service branches: the Israeli Ground Forces, the Israeli Air Force, and the Israeli Navy. It is the sole military wing of the Israeli security apparatus. The IDF is headed by the chief of the general staff, who is subordinate to the defense minister.

On the orders of first prime minister David Ben-Gurion, the IDF was formed on 26 May 1948 and began to operate as a conscript military, drawing its initial recruits from the already existing paramilitaries of the Yishuv—namely Haganah, the Irgun, and Lehi. It was formed shortly after the Israeli Declaration of Independence and has participated in every armed conflict involving Israel. In the wake of the 1979 Egypt–Israel peace treaty and the 1994 Israel–Jordan peace treaty, the IDF underwent a significant strategic realignment. Previously spread across various fronts—Lebanon and Syria in the north, Jordan and Iraq in the east, and Egypt in the south—the IDF redirected its focus towards southern Lebanon and the Palestinian territories. In 2000, the IDF withdrew from Southern Lebanon and in 2005 from Gaza. Conflict between Israel and Islamist groups based in Gaza, notably Hamas, has continued since then. Moreover, notable Israeli–Syrian border incidents have occurred frequently since 2011, due to regional instability caused by the Syrian civil war.

In the 1948 Palestine war, more than 700,000 Palestinian Arabs – about half of Mandatory Palestine's predominantly Arab population – were expelled or fled from their homes. Expulsions and attacks against Palestinians were carried out by the Zionist paramilitaries Haganah, Irgun, and Lehi, which merged to become the Israel Defense Forces after the establishment of Israel part way through the war. The expulsion and flight was a central component of the fracturing, dispossession, and displacement of Palestinian society, known as the Nakba. Dozens of massacres targeting Arabs were conducted by Israeli military forces and between 400 and 600 Palestinian villages were destroyed. Village wells were poisoned in a biological warfare programme, properties were looted to prevent Palestinian refugees from returning, and some sites were subject to Hebraization of Palestinian place names.

The precise number of Palestinian refugees, many of whom settled in Palestinian refugee camps in neighboring states, is a matter of dispute, although the number is around 700,000, being approximately 80 percent of the Arab inhabitants of what became Israel. About 250,000–300,000 Palestinians fled or were expelled during the 1947–1948 civil war in Mandatory Palestine, before the termination of the British Mandate on 14 May 1948. The desire to prevent the collapse of the Palestinians and to avoid more refugees were some of the reasons for the entry of the Arab League into the country, which began the 1948 Arab–Israeli War.

The Jewish insurgency in Mandatory Palestine, known in the United Kingdom as the Palestine Emergency, was a paramilitary campaign carried out by Zionist militias and underground groups—including Haganah, Lehi, and Irgun—against British rule in Mandatory Palestine from 1944 to 1948. The tensions between the Zionist underground and the British mandatory authorities rose from 1938 and intensified with the publication of the White Paper of 1939. The Paper outlined new government policies to place further restrictions on Jewish immigration and land purchases, and declared the intention of giving independence to Palestine, with an Arab majority, within ten years. Though World War II brought relative calm, tensions again escalated into an armed struggle towards the end of the war, when it became clear that the Axis powers were close to defeat.

The Haganah, the largest of the Jewish underground militias, which was under the control of the officially recognised Jewish leadership of Palestine, remained cooperative with the British. But in 1944 the Irgun, an offshoot of the Haganah, launched a rebellion against British rule, thus joining Lehi, which had been active against the authorities throughout the war. Both were small, dissident militias of the right-wing Revisionist movement. They attacked police and government targets in response to British immigration restrictions.

Haganah (Hebrew: הַהֲגָנָה ha-Haganah, lit. 'The Defense') was the main Zionist paramilitary organization that operated for the Yishuv in the British Mandate for Palestine. It was founded in 1920 to defend the Yishuv's presence in the region, and was formally disbanded in 1948, when it became the core force integrated into the Israel Defense Forces shortly after the Israeli Declaration of Independence.

Formed out of previous existing militias, Haganah's original purpose was to defend Jewish settlements against Arab attacks; this was the case during the 1921 Jaffa riots, the 1929 Palestine riots, the 1936 Jaffa riots, and the 1936–1939 Arab revolt in Palestine, among others. The paramilitary was under the control of the Jewish Agency, the official governmental body in charge of Palestine's Jewish community during the British era. Until the end of World War II, Haganah's activities were moderate, in accordance with the strategic policy of havlagah (lit. 'self-restraint'), which caused the breakaway of the more radical paramilitaries: Irgun and Lehi. Haganah militants received clandestine military support from Poland and sought cooperation with the United Kingdom in the event of an Axis-led invasion of Palestine through North Africa, prompting the creation of the Palmach, their elite fighting force, in 1941.