Explained | History behind the Israel-Palestinian conflict

Israel and Hamas have been waging war since gunmen from the Palestinian militant group in the Gaza Strip stormed into southern Israel on Oct. 7, killing 1,200 people and capturing 253 hostages, by Israeli tallies. Israel responded with a military offensive in Gaza in which more than 40,400 Palestinians have been killed, according to Gaza health authorities.

The conflict is the bloodiest in a protracted conflict between Israelis and Palestinians that has rumbled on for seven decades and destabilised the Middle East.

What are the origins of the conflict?

The conflict pits Israeli demands for a secure homeland in what it has long regarded as a hostile Middle East against Palestinians' unrealised aspirations for a state of their own.

In 1947, while Palestine was under British mandate rule, the United Nations General Assembly agreed a plan to partition it into Arab and Jewish states and for international rule over Jerusalem. Jewish leaders accepted the plan, which gave them 56% of the land. The Arab League rejected the proposal.

Israel's founding father, David Ben-Gurion, proclaimed the modern state of Israel on May 14, 1948, a day before the scheduled end of British rule, establishing a safe haven for Jews fleeing persecution and seeking a national home on land to which they cite ties dating to antiquity.

In the late 1940s, violence had been intensifying between Arabs, who comprised about two thirds of the population, and Jews. A day after Israel was created, troops from five Arab states attacked. In the war that followed, some 700,000 Palestinians fled or were driven from their homes, ending up in Jordan, Lebanon and Syria, and in Gaza, the West Bank and East Jerusalem. Palestinians lament this as the "Nakba", or catastrophe. Israel contests the assertion that it forced out Palestinians.

Armistice agreements halted the fighting in 1949 but there was no formal peace. Descendants of Palestinians who stayed put in the war make up about 20% of Israel's population now.

What wars have been fought since then?

In 1967, Israel made a pre-emptive strike on Egypt and Syria, launching the Six-Day War. Israel captured the West Bank and Arab East Jerusalem from Jordan, the Golan Heights from Syria and the Sinai Peninsula and Gaza Strip from Egypt.

A 1967 Israeli census put Gaza's population at 394,000, at least 60% of them Palestinian refugees and their descendants.

In 1973, Egypt and Syria attacked Israeli positions along the Suez Canal and Golan Heights, starting the Yom Kippur War. Israel pushed both armies back within three weeks.

Israel invaded Lebanon in 1982 and thousands of Palestine Liberation Organization (PLO) guerrillas under Yasser Arafat were evacuated by sea after a 10-week siege. Israeli troops pulled out of Lebanon in 2000. In 2005, Israel withdrew settlers and soldiers from Gaza. Hamas won parliamentary elections in 2006 and seized full control of Gaza in 2007. Fighting flared between Israel and Palestinian militants in Gaza in 2006, 2008, 2012, 2014 and 2021. In 2006, Lebanon's Iran-backed Hezbollah militants captured two Israeli soldiers in the border region and Israel launched military action, triggering a six-week war.

There have also been two Palestinian intifadas, or uprisings, from 1987 to 1993 and 2000 to 2005. In the second, Hamas and other Palestinian militant groups carried out suicide bombings in Israel, and Israel conducted tank assaults and airstrikes on Palestinian cities.

Since then, there have been several rounds of hostilities between Israel and Hamas, which refuses to recognise Israel and is regarded as a terrorist organisation by Israel, the European Union, United States and other countries. Hamas says its armed activities are resistance against Israeli occupation.

Attempts made to wager peace

In 1979, Egypt became the first Arab state to sign a peace treaty with Israel, under which the Sinai Peninsula was returned to Egyptian rule.

In 1993, Israeli Prime Minister Yitzhak Rabin and PLO leader Arafat shook hands on the Oslo Accords establishing limited Palestinian autonomy in the West Bank and Gaza. In 1994, Israel signed a peace treaty with Jordan. But a summit six years later attended by Arafat, Israeli Prime Minister Ehud Barak and U.S. President Bill Clinton at Camp David failed to secure a final peace deal.

In 2002, a proposed Arab League plan offered Israel normal relations with all Arab countries in return for a full withdrawal from the lands it took in the 1967 Middle East war, the creation of a Palestinian state and a "just solution" for Palestinian refugees. The presentation of the plan was overshadowed by Hamas, which blew up an Israeli hotel full of Holocaust survivors during a Passover seder meal.

Further Palestinian-Israeli peacemaking efforts have been stalled since 2014.

Under US President Donald Trump in 2020, Israel reached deals known as the Abraham Accords to normalise ties with several Arab states, including the United Arab Emirates, Bahrain and Morocco.

Palestinians stopped dealing with the U.S. administration after Trump broke with U.S. policy by recognising Jerusalem as Israel's capital. The Palestinians seek East Jerusalem as the capital of their future state.

Qatar and Egypt have acted as mediators in the latest war, securing a truce late last year that lasted seven days, during which hostages held by Hamas were exchanged for prisoners held by Israel, and more humanitarian aid flowed into Gaza.

Where do peace efforts stand now?

Months of on-off talks on a further Gaza truce have so far proven fruitless, circling the same issues. Hamas said on May 10 efforts were back at square one, and senior Hamas official Osama Hamdan stated on June 29 there had been no progress since then.

Israel has insisted that peace will be possible only if Hamas is destroyed, while Hamas has said it will only accept a permanent ceasefire, not a temporary one. Other difficulties have included the sequencing of reciprocal steps in any deal, the number and identity of Palestinian prisoners to be released alongside Israeli hostages, control over the Gaza-Egypt border and free movement for Palestinians inside Gaza.

US President Joe Biden's administration has sought a "grand bargain" in the Middle East that would include normalisation of relations between Israel and Saudi Arabia. Riyadh says this would require progress towards creating an independent Palestinian state, which Israeli Prime Minister Benjamin Netanyahu has ruled out.

What are the main Israeli-Palestinian issues

A two-state solution, Israeli settlements on occupied land, the status of Jerusalem, agreed borders, and the fate of Palestinian refugees.

Two-state solution: An agreement that would create a state for Palestinians in the West Bank and Gaza alongside Israel. Netanyahu says Israel must have security control over all land west of the Jordan River, which would preclude a sovereign Palestinian state.

Settlements: Most countries deem Jewish settlements built on land Israel captured in 1967 to be illegal. Israel disputes this and cites historical and biblical ties to the land. Continued settlement expansion is among the most contentious issues between Israel, the Palestinians and the international community.

Jerusalem: Palestinians want East Jerusalem, which includes the walled Old City's sites sacred to Muslims, Jews and Christians alike, to be the capital of their state. Israel says Jerusalem should remain its "indivisible and eternal" capital.

Israel's claim to Jerusalem's eastern part is not recognised internationally. Trump recognised Jerusalem as Israel's capital, without specifying the extent of its jurisdiction in the disputed city, and moved the U.S. Embassy there in 2018.

Refugees: Today about 5.6 million Palestinian refugees - mainly descendants of those who fled in 1948 - live in Jordan, Lebanon, Syria, the Israeli-occupied West Bank and in Gaza. About half of registered refugees remain stateless, according to the Palestinian foreign ministry, many living in crowded camps.

Palestinians have long demanded that refugees and their millions of descendants be allowed to return. Israel says any resettlement of Palestinian refugees must occur outside its borders.