1904 to 1962, Franco-Siamese Indochina and The Hague • The old line became a full border war. After a fatal clash in spring 2025, Thailand and Cambodia fought a five-day conflict in July 2025 that killed at least a dozen people and displaced several hundred thousand civilians, including in Preah Vihear province, with all land border crossings closed from late June 2025. A ceasefire announced on 27 December 2025 was almost immediately disputed, each side accusing the other of violating it in early January 2026, and the frontier has remained sealed and tense through 2026. The conflict is a reminder that a border is not a fact of nature but a claim that hardened because, at the crucial moment, no one pushed back: the watershed never moved, but the line drawn around the temple in 1907, and left unchallenged, is still killing people more than a century later.
An eleventh century Khmer temple, Preah Vihear, sits on a cliff in the Dangrek mountains. A French treaty in 1904 put the border along the watershed, which should have left the temple in Siam. But the 1907 map drew the line the other way, and Siam never objected. In 1962 the World Court gave the temple to Cambodia, not on the geography but on the silence: a country that says nothing for fifty years is taken to have agreed. In 2025 and 2026 Thailand and Cambodia fought a real war along that same line.
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Antiquity to 1936 • The 2025-2026 argument over artificial-intelligence 'doom' repeats the same apocalyptic register at maximum stakes. In October 2025 more than 2,000 people, including AI 'godfathers' Geoffrey Hinton and Yoshua Bengio and Apple co-founder Steve Wozniak, signed a public statement calling for a prohibition on developing superintelligence until it can be proven safe, citing the risk of human extinction. Hinton now puts the chance that AI causes human extinction within thirty years at 10 to 20 percent; Bengio warns the race for AI dominance could create machines with self-preservation goals of their own. The structural rhyme is exact: a new information technology met with the prediction that it will not merely disrupt us but end us. The historical record suggests the genre of total catastrophe is almost always wrong, while the quieter prediction that the technology will change us in unforeseen ways is almost always right.
On 19 February 1881 the New York Times explained, deadpan, how the telegraph would seduce the earth's currents, shift the poles, tip the planet off its axis, and throw the solar system into catastrophe. It was mocking a prophecy made in earnest. For two thousand four hundred years, from Socrates on writing to a bandmaster on the phonograph, every new machine has arrived to the same announcement of the end of the world. Now it is artificial intelligence's turn, and some of the men who built it are the ones predicting extinction.
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Classical Greece, 421 to 404 BC • On 11 June 2026, after months of open war between the United States and Iran, President Trump announced a 60-day ceasefire intended to give the two sides time to negotiate the contentious issues toward a final agreement. The negotiations centre on the same kind of fault lines that doomed the Peace of Nicias: control of a vital chokepoint, the Strait of Hormuz (through which much of the world's oil passes), and the role of regional proxies, with Iran tying any broader agreement to a halt in Israeli operations in Lebanon. It is a truce between exhausted enemies who do not trust each other, whose allies and proxies are not bound by it, and who can use the quiet to rearm: structurally, the shape of the Peace of Nicias rather than the shape of a peace.
In 421 BC, exhausted Athens and Sparta signed a peace meant to last fifty years. It lasted six, and the six years of peace destroyed Athens more thoroughly than the ten years of war that came before. In June 2026, the United States and Iran announced a sixty-day ceasefire to negotiate a final agreement. The Peace of Nicias is the warning about what a truce really is.
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1948 Prague • On 7 June 2026 Armenia, for a generation Russia's closest ally in the South Caucasus (hosting a Russian base and belonging to Moscow's security alliance), held a parliamentary election that became a referendum on its attempt to climb out of Russia's orbit toward the European Union, a pivot Prime Minister Nikol Pashinyan had accelerated after Moscow stood aside during Armenia's 2023 loss of Nagorno-Karabakh. Western intelligence officials and international observers described a broad Russian covert interference campaign, disinformation, money and support for pro-Russian candidates, and Putin had pressured Pashinyan in April 2026 to allow a jailed pro-Russian tycoon to run. This time the pressure did not fully work: Pashinyan's Civil Contract won about 49.8 percent and a majority of roughly 64 of 105 seats, but fell short of the two-thirds needed for the constitutional referendum tied to a lasting peace with Azerbaijan, leaving Armenia still caught in the same vice that crushed Czechoslovakia, a small democracy hemmed in by a larger neighbour that does not accept its right to choose its own friends.
In February 1948, Czechoslovakia, the last working democracy in Eastern Europe, was swallowed by the Soviet bloc in three weeks, without a single tank crossing the border. Two weeks later its foreign minister was found dead beneath a window. The lesson was brutal: a small state in a great power's orbit does not get to choose. On 7 June 2026, Armenia tried to vote the other way, steering out of Russia's orbit toward Europe despite a covert Russian campaign to stop it. The two stories run in opposite directions, which is exactly why they rhyme.
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1958 Taiwan Strait • At the end of December 2025 China conducted its largest exercises yet around Taiwan (Justice Mission 2025), with the China Coast Guard patrolling and encircling the same outer islands of Kinmen (Quemoy) and Matsu, closing to within about 1.3 to 1.6 nautical miles, while all 84 scheduled flights between Taiwan and the islands were suspended, affecting roughly 6,000 travelers. Analysts assessed the drills as a rehearsal for a blockade meant to choke off Taiwan's shipping and energy and prevent outside aid, escalating the Fourth Taiwan Strait Crisis. The pressure is being applied first at the very islands Mao shelled in 1958, and the deliberate ambiguity that held the line for a generation is wearing thin.
On 23 August 1958, Communist China opened fire on two specks of rock two miles off its coast, Quemoy and Matsu, and for a few weeks the world's first serious nuclear crisis turned on whether America would fight for them. Eisenhower found a way to answer without ending the world. Sixty-eight years later, China's largest war games yet sent the coast guard circling the very same islands, now spelled Kinmen and Matsu, rehearsing a blockade. History did not just rhyme. It chose the exact same two islands.
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United States, 1846 to 1848 • On 3 June 2026 the US House of Representatives voted 215 to 208 to pass a war powers resolution directing President Trump to end American hostilities with Iran, the first time such a measure cleared a chamber on a final vote since the war began in late February following US strikes on Iran's nuclear sites. Four Republicans (Thomas Massie, Brian Fitzpatrick, Tom Barrett and Warren Davidson) crossed the aisle. The vote is largely symbolic: the Senate has not passed its own version, a veto is expected, and the administration argues the 1973 War Powers Resolution is itself unconstitutional. Trump called the vote 'meaningless.' The episode revives a 178-year-old constitutional question about whether a president can take the country to war on his own judgment, and whether the legislature can stop him.
In 1847 a freshman congressman named Abraham Lincoln demanded that President Polk point to the exact spot where, as Polk claimed, Mexico had shed American blood on American soil to justify a war. The blood, Lincoln argued, was spilled on disputed ground the President had marched troops into on purpose. The gesture was ignored, it was mocked as Spotty Lincoln, and it helped end his career. In June 2026, the House voted 215 to 208 to limit the President's power to wage the undeclared war on Iran. He called it meaningless. So was the spot.
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Imperial Russia, 1881 • The 2026 US-Israeli regime-change war on Iran, the killing of Supreme Leader Ali Khamenei, and the Revolutionary Guards' installation of his son Mojtaba amid a shift of power to the military-security apparatus.
In 1881 revolutionaries killed Tsar Alexander II, the reformer who had freed the serfs and who had signed Russia's first proto-constitution that very morning, certain his death would open the door to freedom. Instead it brought his harder son, the secret police, and decades of reaction. In 2026, a regime-change war has killed Iran's supreme leader, and the Revolutionary Guards have installed his son and tightened a harder, more militarised grip. The lesson of the canal is cold: the surest way to empower a dead man's hardest heirs is to kill him.
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Byzantine Empire, 963 to 969 AD • Israel's 2026 crisis over ending the ultra-Orthodox (Haredi) exemption from military conscription, pitting the Supreme Court and a war-weary public against the religious community and the parties that protect it.
In 964 the warrior-emperor Nikephoros Phokas, conqueror of Crete, Cyprus and Antioch, tried to make the Byzantine Church share the burden of the empire's defence: he curbed the tax-exempt, service-exempt monasteries and asked that fallen soldiers be honoured as martyrs. The Church refused, he was murdered, and his law was undone. A thousand years later, Israel is fighting almost exactly the same battle over the ultra-Orthodox draft exemption, and history offers a sobering note: the exemption tends to outlive the reformer.
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Roman Britain, around 410 to 450 AD • President Trump's 2026 withdrawal of US forces from Germany and his floating of a NATO without the United States, and Europe's scramble to rearm and build a fallback defence it cannot quickly fully replace.
Around the year 410, with the legions gone, the Western emperor sent word that Rome could no longer defend Britain: see to your own defence. The abandoned province improvised, hiring Saxon mercenaries who soon turned on their employers and took the island. In 2026, as the United States pulls troops from Germany and floats a NATO without America, Europe is scrambling to build a defence of its own, and the oldest lesson of abandonment is waiting on the wall.
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1768 Boston • The US-China tariff war of 2026 and the rerouting of Chinese trade through third countries such as Vietnam and Mexico, with Washington escalating enforcement against transshipment.
Boston, June 1768: the Royal Navy tows a smuggling sloop called Liberty out of the harbour and lights a riot. For thirty years Britain had let the colonies smuggle in peace; the day it chose to enforce its trade laws, it began to lose them. In 2026, as Washington walls off Chinese goods and chases the trade as it reroutes through Vietnam and Mexico, the same lesson is waiting on the dock.