Four fault lines, four very different timescales — one running 1,400 years, one running 78 years, one running 73, one running 36 — but the same underlying pattern: an old grievance over land, power, or control gets frozen into the record, and the people living on top of it inherit the argument. Here's the paper trail for each, no verdict attached.
One father, three claims — and a 1,400-year-old argument over which claim is final
Judaism, Christianity, and Islam are all Abrahamic faiths — each traces its spiritual lineage back to Abraham and shares much of the same cast of prophets. Judaism is the oldest, its identity formed around the Exodus and Sinai tradition roughly 3,000 years ago. Christianity split off from Second Temple Judaism in the 1st century CE around the figure of Jesus. Islam arrived 600 years later, in the 7th century CE, presenting itself not as a new religion but as a restoration of the original, uncorrupted monotheism Abraham practiced — which is precisely why the three faiths overlap so heavily and disagree so sharply: each one claims to be the authoritative version of the same story.
Source: Abrahamic religions overview →
Jerusalem's Temple Mount: the single most contested 37 acres on Earth
All three faiths converge on one hilltop in Jerusalem's Old City. It's the site of the First and Second Jewish Temples, making it Judaism's holiest place (the Western Wall is what remains of the Second Temple's retaining wall). It's central to Christian tradition as the city where Jesus taught, was crucified, and — Christians believe — rose again. And since the late 7th century it has held Al-Aqsa Mosque and the Dome of the Rock, Islam's third-holiest site, built on what Muslims hold to be the location of Muhammad's Night Journey. Three religions, one physical location, zero ability to divide it.
Source: Temple Mount overview →
Empires changed hands, the argument didn't: Rome → Caliphates → Crusaders → Ottomans → British Mandate → 1948
Jerusalem and the surrounding land passed through Roman, Byzantine, early Islamic Caliphate, Crusader, Mamluk, and four centuries of relatively pluralistic Ottoman rule before the British Mandate took over after World War I. The 1947 UN Partition Plan, the 1948 creation of Israel and the war that followed, the 1967 Six-Day War (after which Israel took East Jerusalem, the West Bank, and Gaza), and the wars, intifadas, and negotiations since are all, in one sense, the same 1,400-year-old ownership question being re-litigated with modern weapons and modern diplomacy instead of medieval ones.
Source: Israeli–Palestinian conflict overview →
The split inside the split: Sunni vs. Shia adds a second, parallel fault line
A separate rivalry runs entirely within Islam. When Muhammad died in 632 CE without naming a clear successor, his community split over who should lead — those who backed his companion Abu Bakr (the root of the Sunni majority) and those who backed his cousin and son-in-law Ali (the root of the Shia minority). That 1,400-year-old succession dispute still shapes the modern map: it's the underlying architecture of the Saudi Arabia–Iran rivalry and the proxy lines running through Iraq, Syria, Yemen, and Lebanon today.
Source: Sunni–Shia relations overview →
1917–1947: a British promise, a genocide, and a UN vote — three decades that made a state feel inevitable to one side and a catastrophe to the other
In 1917, Britain's Balfour Declaration backed "a national home for the Jewish people" in Palestine — then an Ottoman territory with a large Arab majority — while Britain simultaneously controlled Palestine as a League of Nations Mandate after WWI and had made separate, harder-to-reconcile wartime promises to Arab leaders. Jewish immigration under the Mandate accelerated through the 1920s–30s, then surged as Jews fled Nazi persecution and, after 1945, the Holocaust's survivors sought refuge with nowhere else that reliably wanted them. Arab Palestinians, already a majority in the land for centuries, increasingly saw the growing Jewish presence as a foreign project being imposed on them by an outside power. Unable to broker a solution, Britain handed the problem to the new United Nations, which in 1947 voted to partition Palestine into separate Jewish and Arab states — a plan Jewish leadership accepted and Arab leadership, along with neighboring Arab states, rejected as illegitimate.
Source: UN Partition Plan for Palestine overview →
1948: Israel declares independence the day the Mandate ends — five Arab armies invade the next day
On May 14, 1948, as the British Mandate expired, Jewish leaders declared the State of Israel. Egypt, Jordan, Syria, Iraq, and Lebanon invaded within a day, starting the first Arab-Israeli War. Israel won and ended up holding more territory than the UN plan had given it. For Israelis, this is the War of Independence — survival against a coordinated attempt to strangle the new state at birth. For Palestinians, the same war is the Nakba ("catastrophe") — roughly 700,000 Palestinians fled or were expelled from their homes and were never allowed to return, becoming the founding wound of Palestinian national identity and the root of the refugee-descendant population, still numbering in the millions, that exists today.
Source: 1948 Arab–Israeli War overview →
1967 and 1973: two more wars redraw the map and set the terms still being argued today
In 1967's Six-Day War, Israel — preemptively striking after weeks of Egyptian troop buildups and an Egyptian blockade — defeated Egypt, Jordan, and Syria and took the West Bank (including East Jerusalem), Gaza, the Sinai Peninsula, and the Golan Heights. Those captured territories, and the Jewish settlements Israel subsequently built in several of them, are the direct source of nearly every "occupied territory" dispute in the news today. In 1973, Egypt and Syria launched a surprise attack on Yom Kippur to reclaim lost land; Israel repelled it but at heavy cost, which eventually pushed both sides toward the 1978 Camp David Accords and Egypt formally recognizing Israel in 1979 — the first Arab state to do so.
Source: Six-Day War overview →
1993 to now: a peace process, two intifadas, a blockade, and October 7
The 1993 Oslo Accords set up limited Palestinian self-rule and a promised path toward a two-state solution that was never completed — derailed by a second intifada (2000–2005), continued settlement growth, and the political splintering of Palestinian leadership. Israel withdrew settlers and troops from Gaza in 2005; Hamas, which rejects Israel's existence, won Gaza's 2006 election and seized full control in 2007, after which Israel and Egypt imposed a blockade that's been in place ever since. On October 7, 2023, Hamas-led fighters crossed into Israel and killed roughly 1,200 people, mostly civilians, and took about 250 hostages — the deadliest single day for Jews since the Holocaust — triggering a massive Israeli military campaign in Gaza that killed tens of thousands of Palestinians and displaced most of the territory's population before a ceasefire took hold in early 2025. As of this writing that ceasefire is holding but fragile, with reconstruction, hostage/prisoner exchanges, and Gaza's postwar governance all still unresolved — check our Breaking News page for where things stand right now.
Source: Gaza war overview →
1951: Iran nationalizes its own oil — and a British company loses control of it
Iran's democratically elected prime minister, Mohammad Mosaddegh, nationalized the Anglo-Iranian Oil Company (British-controlled, the ancestor of today's BP) in 1951, ending the arrangement that had let Britain keep the overwhelming majority of Iran's oil revenue. Britain, unable to get Washington on board under President Truman, kept pushing.
Source: Britannica — 1953 coup in Iran →
1953: Operation Ajax — the CIA and MI6 engineer a coup, officially acknowledged 60 years later
Once Eisenhower took office, Cold War fears about Soviet and communist-party (Tudeh) influence brought Washington in. In August 1953, the CIA (led by Kermit Roosevelt Jr.) and Britain's MI6 jointly organized protests, paid off officials and media, and moved the military to remove Mosaddegh and restore the authority of Shah Mohammad Reza Pahlavi. The CIA didn't publicly confirm its role until declassified documents were released in 2013 — the 60th anniversary of the coup.
Source: 1953 Iranian coup d'état overview →
1953–1979: the Shah's rule, backed by the West, ends in the Islamic Revolution
The reinstated Shah ruled for 26 years with heavy U.S. and U.K. backing, mixing modernization programs with a feared secret police (SAVAK). Resentment over foreign-backed rule — with 1953 as the founding grievance — fed into the 1979 Islamic Revolution that overthrew him, and directly into the 444-day U.S. Embassy hostage crisis that followed that same year.
Source: Iranian Revolution overview →
Why it's still live in 2026: 1953 is the reference point Iran's government reaches for every time
Every major U.S.–Iran flashpoint since — the hostage crisis, decades of sanctions, the nuclear standoff, proxy conflicts across the region — gets framed by Tehran against the same backdrop: a democratically elected government removed by foreign intelligence services to protect foreign oil interests. Whatever the current headline, that 1953 reference point is doing a lot of the explanatory work underneath it.
Source: National Security Archive — CIA's 1953 Iran coup documents →
1990: "Not one inch eastward" — a phrase that means very different things to different people
During talks over German reunification in February 1990, U.S. Secretary of State James Baker floated to Gorbachev that NATO's jurisdiction would not move "one inch eastward" — in context, a discussion about not extending NATO's military structure into what was then East Germany. No treaty was ever signed committing NATO to a broader freeze on future membership, and historians and the declassified record genuinely disagree about how far the verbal assurances of that period were meant to reach. Russia's government has long treated it as a betrayed promise; Western governments have long treated it as a narrower, Germany-specific assurance that was kept.
Source: "Not One Inch" — the historical dispute →
1991–2020s: the Soviet Union dissolves, and its former neighbors join NATO by choice
After the USSR broke apart in 1991, NATO expanded eastward in waves — Poland, Czechia, and Hungary in 1999; the Baltic states and others in 2004; more countries in later rounds — each time at the request of the joining country, most of which had lived under direct Soviet control and wanted a security guarantee against it happening again. NATO's position is that sovereign nations have the right to choose their own alliances; Russia's position is that this expansion, whatever the individual countries wanted, moved a hostile military bloc to its border in violation of the spirit of 1990.
Source: National Security Archive — NATO expansion, what Gorbachev heard →
2008 Bucharest, 2008 Georgia, 2014 Crimea: the line moves from words to war
At NATO's 2008 Bucharest summit, the alliance declared that Ukraine and Georgia "will become" members someday, without a timeline — a moment Russia has repeatedly pointed to as the trigger point. Months later, Russia fought a short war with Georgia over two breakaway regions. In 2014, after Ukraine's Euromaidan protests ousted its pro-Russian president, Russia annexed Crimea and backed separatists in eastern Ukraine's Donbas region, starting a war that ran for eight years before escalating into Russia's full-scale invasion of Ukraine in February 2022.
Source: Enlargement of NATO overview →
Why it's still live: Putin's stated case reaches back further than 1990
In justifying the invasion, Putin cited NATO's eastward expansion and Ukraine's NATO ambitions — but also reached past the Cold War entirely, arguing Ukraine and Russia are historically "one people" tied to Kievan Rus' more than a thousand years ago and disputing Ukraine's right to exist as a fully separate state. That combination — a 1990s grievance about broken assurances, layered on top of a centuries-old claim to the same territory — is why the war is framed in Moscow as recovering what was lost, not simply a border dispute.
Source: NPR — the NATO expansion debate at the heart of the conflict →
