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Three thousand Spartans, a Roman dictator, a failed bomb plot, and a string of spies who sold out their own side — this history narration breaks down the most notorious traitors in history in a fast, sharp, story-driven format. From Ephialtes at Thermopylae and Brutus in Rome to Guy Fawkes, Mir Jafar, Benedict Arnold, and Vidkun Quisling, each betrayal is explained through the decision, the payoff, and the fallout.

The story keeps moving into the Cold War, where the Rosenberg spy ring, Kim Philby, Aldrich Ames, and Robert Hanssen show how office work, counterintelligence, and secret meetings can do as much damage as armies. It is a packed historical documentary-style countdown built for viewers who enjoy betrayal stories, espionage history, military history, and true-life political intrigue.

Perfect for history fans, spy-story listeners, and anyone searching for narrated history, betrayal explained, famous traitors, Cold War espionage, and historical storytelling with a fast pace. Use it for background listening, a quick history deep dive, or a compelling overview of the most infamous turncoats in world history.

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00:00From a man who sold a secret path that doomed 300 Spartans to a general who burned down his
00:06own hometown, these are the most notorious traitors in history explained. And the worst
00:13of them were never the enemy. They were the guys you trusted. In the late summer of 480 BC,
00:19the entire Greek world was hanging on one strip of dirt called Thermopylae. And about 7,000 Greeks,
00:26including 300 Spartans, marched out together under the Spartan king Leonidas. Their job was
00:32to defend the past from Xerxes and a Persian army of 120,000 men. And they picked their ground
00:39perfectly. Because Thermopylae was a gap between the mountains and the sea that was so tight,
00:45the biggest army on earth had to come at them a few men at a time. So for two straight
00:50days,
00:50a few thousand Greeks held off an empire. But then a local man named Aphiotis walked into the
00:57Persian camp with something to sell. Cause he knew about the Anapaya path, a goat trail that ran over
01:04the mountain and came out behind the Greek line. And he handed it over for the promise of Persian
01:10treasure. So Leonidas sent most of his army home to fight another day. And he stayed at the pass with
01:16his 300 Spartans and a few hundred Greeks who refused to leave. Leonidas and his men were massacred.
01:24Thing is, Aphiotis never got paid. Cause even though the Spartans at Thermopylae were crushed,
01:30Xerxes still lost the war. And the reward went home with him. You betrayed them and you didn't even
01:37get paid? So Greece put a bounty on Aphiotis. And around 470 BC, a man named Athenades killed him.
01:45And that's the day Aphiotis stopped being a name. Cause in Greek, Aphiotis became the word for
01:52nightmare. But losing your name to a dictionary takes centuries. Brutus, Julius Caesar's right-hand
01:59man, lost his in an afternoon. Cause Brutus' family was actually responsible for starting the Roman
02:06Republic. Cause his ancestor, Lucius Junius Brutus, threw the last king out of Rome in 509 BC.
02:13So betraying men who got too powerful was just part of the family trade.
02:18But Brutus owed Caesar everything. Cause he'd been Caesar's enemy at Pharsalus in 48 BC.
02:25And Caesar didn't just spare him. He made Brutus one of the top judges in Rome.
02:30And promised him the highest job in the whole Republic.
02:34So why turn on the man who handed him everything?
02:37Well, in February of 44 BC, Caesar got himself named dictator for life.
02:43And to Brutus, this was a sign the Republic his family had fought to protect was about to die.
02:49So on March 15th, 44 BC, Brutus walked into the Senate with a knife under his toga.
02:55And when the deed was done, Caesar had between 23 and 35 stab wounds.
03:00Most people think Caesar's last words were et tu, Brute.
03:05But the words the Roman historians actually wrote down were so much more heartbreaking.
03:11Caesu technon.
03:12You too, child?
03:15You had one guy in your corner, sir.
03:18One.
03:19But Brutus killed Caesar to save the Republic.
03:22And he ended it instead.
03:25Cause the war that followed put an emperor back on the throne.
03:28And shortly after, Brutus fell on his own sword.
03:32But Brutus only wanted one guy dead.
03:35Guy Fawkes wanted the whole government gone.
03:38In 1605, Fawkes and a group of English schemers came up with the Gunpowder Plot.
03:43An insane plan to pack 36 barrels of gunpowder into a cellar under the House of Lords
03:50and blow up King James I and most of the English government at the opening of Parliament.
03:55Fawkes was the muscle behind the plot cause he was the only one who actually knew explosives
04:00from years fighting for Catholic Spain.
04:03But on October 26, 1605, a nobleman named Lord Monteagle got an anonymous letter telling
04:10him to skip the opening.
04:12So the king ordered a search.
04:14And in the early hours of November 5, 1605, they found a tall man in a dark cellar next to
04:21a huge pile of gunpowder, calling himself John Johnson.
04:25John Johnson.
04:28Way to think on your feet, sir.
04:31But King James signed off on torture by degrees preceding to the worst.
04:35And within days, Fawkes gave up every name.
04:39So on January 31, 1606, they brought him out to be hanged, drawn, and quartered.
04:45But he cheated them, cause he jumped off the gallows ladder hard enough to snap his own
04:50neck first.
04:52And here's the strangest part.
04:54Cause Guy Fawkes failed so badly that Britain gave him a holiday.
04:59400 years later, they're still burning him in effigy every November 5th, the same night
05:05they caught him in that cellar.
05:06But Fawkes never got his hands on a country.
05:09This next man did.
05:11Mir Jafar was the commander-in-chief of the Army of Bengal, serving the young Nawab, Suraj
05:18Udala.
05:19But before a shot was fired, Mir Jafar cut a private deal with Robert Clive and the East
05:25India Company.
05:26All he had to do was help the Brits win, and the Bengal throne was his.
05:31So at the Battle of Plassey in June 1757, Mir Jafar marched his army onto the field.
05:37And then he just stood there and watched as the Nawab's line broke, and the Nawab himself
05:43was hunted down and killed.
05:45Amir Jafar got exactly what he was promised.
05:48But he didn't just get a kingdom.
05:51He got a bill.
05:52Cause he owed the company 17.7 million rupees.
05:57And Clive pocketed over 2 million more.
06:00So they pushed him off the throne in 1760, and Jafar died in 1765 while the Brits took
06:07over Bengal.
06:08And 250 years later, across India and Bangladesh, calling a man Amir Jafar is still about the
06:16worst thing you could say.
06:18But every country's got one of these men.
06:20And America's is so famous that we don't even bother saying the word traitor anymore.
06:25We just say his name.
06:27Cause here's what history class never quite got right about Benedict Arnold.
06:32Before he was a traitor, he was the best fighting general America had.
06:36At Quebec in December 1775, he took a musket ball that shattered his left leg.
06:42And at Saratoga in 1777, after a bitter falling out with his commander, he rode into the fight
06:49anyway and helped win the battle that brought France into the war.
06:52Same leg, torn apart again.
06:55But he wouldn't let them cut it off.
06:57So he kept it.
06:59Two inches shorter than the other one, for life.
07:02And then he watched Congress hand promotions to men who'd never even been shot at.
07:07He got investigated over money.
07:10He got court-martialed.
07:11And in April 1780, George Washington handed him a formal reprimand.
07:16So the best battlefield commander in the army decided he was done.
07:21In July 1780, Arnold got command of West Point, the fortress that controlled the Hudson River.
07:27And then he offered to sell it to the British for £20,000 and a position in their army.
07:33But on September 23rd, 1780, three militiamen stopped a traveler near Tarrytown, New York.
07:40His name was Major John Andre, Arnold's British handler.
07:44And the West Point plans were folded inside his boot.
07:47So on the morning of September 24th, Arnold got word at the breakfast table and made it aboard the British
07:54ship HMS Vulture.
07:56Andre was hanged.
07:57But Arnold got away.
07:59But the part almost nobody knows is what Arnold did next.
08:03Because he put on a red coat and came back.
08:06On September 6th, 1781, Arnold led a raid on New London, Connecticut, 14 miles down the river from Norwich, the
08:15town where he was born.
08:16The waterfront burned.
08:18And across the river at Fort Griswold, 85 Americans were killed.
08:22Most of them after the fort had surrendered.
08:25When Colonel William Ledyard handed over his sword, he was run through with it, burning down your own hometown.
08:33Jeez.
08:35So Arnold died in London on June 14th, 1801.
08:39But go up to the Saratoga battlefield today and you'll find a monument to a marble riding boot, a general
08:45shoulder patch, and a cannon barrel aimed straight at the ground.
08:49The old school symbol for disgrace.
08:52There's no name carved anywhere on it.
08:55Because America decided to honor the only part of Benedict Arnold that stayed loyal.
09:00And that's why this country never needed a foreign word for a turncoat.
09:04We already had a perfectly good one.
09:07On the flip side, Norway got their word in six days.
09:11And Vietkun Quisling didn't start out as a monster.
09:14In the early 1920s, he did relief work alongside the explorer Friedjof Nensen, feeding people through the Russian famine.
09:22But on April 9th, 1940, German troops came ashore in Norway.
09:27And while the real government was still running for its life, Quisling walked into the NRK radio studio in Oslo
09:34and announced over the air that he was now prime minister, even though nobody voted for him.
09:40And it lasted about six days.
09:43Turns out, even the Germans didn't want him.
09:46So they shoved him aside.
09:48But by April 15th, 1940, the Times of London was already printing his last name as a plain noun.
09:55Quisling, a man who sells his own country from the inside.
09:59So he spent two years crawling back.
10:02And on February 1st, 1942, the Germans gave him the job for real.
10:08But under Quisling's government, Norway's Jews were registered by name.
10:13Arrests began on October 26th, 1942.
10:16And the families were shipped south to Auschwitz.
10:19Most of them never came home.
10:21So when Germany fell, Norway came for him.
10:25He was arrested on May 9th, 1945, convicted on September 10th,
10:30and shot by firing squad at Akershus Fortress on October 24th.
10:34And his name is still sitting in the dictionary.
10:37But these next four men never fired a shot at anybody.
10:41They sat in offices.
10:42They went to meetings.
10:44And totally blended in.
10:45And they did more damage than any army ever could.
10:49And it starts with a married couple in a New York apartment.
10:53Julius Rosenberg ran a Soviet spy ring inside the United States.
10:58And he was good at it.
10:59He handed over the proximity fuse.
11:02He passed drawings for the P-80 shooting star, America's first real jet fighter.
11:07And he recruited people inside the Manhattan Project,
11:10including his own brother-in-law, David Greenglass,
11:13who helped smuggle atomic research to Russia alongside physicist Klaus Fuchs.
11:19But when the British arrested Klaus in February 1950,
11:23he gave up his American contact, a Philadelphia chemist named Harry Gold.
11:27And Gold gave up David Greenglass.
11:30And Greenglass finally gave up Julius.
11:33So Julius and his wife were arrested just a few months later.
11:37And Judge Irving Kaufman sentenced them both to death,
11:41blaming them for the Americans dying in Korea.
11:44And on June 19, 1953, they were both executed at Sing Sing,
11:50leaving two sons behind, ages 6 and 10.
11:54Two kids left behind.
11:56They were just victims in all this.
11:57But the Rosenbergs got caught in three years.
12:01The next guy did it for 30, walked away clean, and got a hero's funeral for it.
12:07Kim Philby was recruited by Soviet intelligence at Cambridge in 1934,
12:13when he was just a 22-year-old kid.
12:15Cause the Soviets weren't buying secrets.
12:18They were buying a young man with the right accent and the right school tie,
12:22then waiting 20 years for him to grow into something useful.
12:26So he did.
12:28Philby joined MI6 in 1940.
12:31And by late 1944, he was running Section 9,
12:35the branch in charge of counterintelligence against the Soviet Union.
12:39So Moscow's man in London got put in charge of hunting Moscow's men in London.
12:45How does that even happen?
12:47My head hurts!
12:48But it got even bigger.
12:50From 1949, Philby was Britain's chief intelligence rep in Washington.
12:55Bodies with James Jesus Angleton, the man who go on to run CIA counterintelligence.
13:02And when the two countries started dropping agents into Albania,
13:06those men walked into ambushes.
13:08Cause they'd been sold before their boots hit the ground.
13:11But it almost came apart in 1951,
13:14when codebreakers closed in on another Soviet source named Donald McClain.
13:19So Philby managed to get a warning out on May 23rd.
13:23And five days later, McClain and Guy Burgess vanished into Moscow.
13:28Which should have finished him.
13:29Cause Burgess had been living in his house.
13:32But you won't believe the nerve of this guy.
13:34He resigned on July 1951.
13:37And then in November 1955,
13:40the foreign secretary, Harold McMillan,
13:42stood up in Parliament and cleared him.
13:44So Philby calmly called a press conference in his mother's living room
13:48and told the reporters,
13:50I have never been a communist.
13:52But a Soviet defector named him in 1961.
13:56So in late 1962,
13:58British intelligence sent his old friend Nicholas Elliott to Beirut
14:02to ask him straight up.
14:04And Philby admitted it.
14:06Then on January 23rd, 1963,
14:09he walked up the gangway of a Soviet freighter
14:12and disappeared.
14:13But turns out Moscow wasn't the prize he thought it was.
14:17Cause the KGB never gave him the rank he'd been promised.
14:21They paid him about 500 rubles a month
14:24and put guards on his door.
14:26His last wife said he was disappointed in many ways.
14:30So he drank.
14:31And in 1988,
14:33his heart gave out.
14:34In a country he'd sold his whole life for,
14:37but never really got to live in.
14:39But Philby did it for something he believed in.
14:43Aldrich Ames did it for a house and a car.
14:46And Ames wasn't some low-level nobody.
14:49He was a CIA counterintelligence officer
14:52working Soviet operations,
14:54which meant he personally knew the names of the Russians
14:57secretly working for the United States.
14:59So in April 1985,
15:03deep in debt and halfway through a divorce,
15:05he walked into the Soviet embassy in Washington
15:08and sold himself away.
15:10His first payment from Russia was 50 grand.
15:13In over nine years,
15:14he collected about 4.6 million.
15:17But look at what that money bought.
15:19Cause Ames burned more than 100 American operations
15:23and gave up the men behind them.
15:25And at least 10 of those people were executed.
15:28One was Dmitry Polyakov,
15:31a Soviet general who'd fed American intelligence
15:33for 20 years
15:34and mostly refused to take any money for it.
15:37He wasn't in it for the cash,
15:39but Ames sold him anyway.
15:42And here's the part that still makes people at Langley
15:45grind their teeth.
15:46Cause Ames was making around 60 grand a year.
15:49He paid $540,000 cash for a house.
15:54He drove a Jaguar to work at the CIA every single day.
15:59And he passed agency polygraphs in 1986 and 1991
16:03by relaxing and being friendly with the examiner.
16:07Nobody saw anything suspicious.
16:10So it took years of quiet work
16:12by a small team of CIA and FBI analysts
16:15until the pattern finally pointed at one man.
16:19And on February 21st, 1994,
16:22they arrested him.
16:23He got life without parole.
16:25And he died in prison on January 5th, 2026
16:29at 84 years old,
16:32having outlived every single person he sold.
16:35But if Ames was the most expensive trader
16:38in American history,
16:39this next man was the worst.
16:42Robert Hansen joined the FBI in 1976
16:45and went into counterintelligence.
16:47And he was the Bureau's computer guy,
16:50which meant he had the keys to the systems
16:52that would have flagged somebody doing what he was doing.
16:55He started selling to Soviet military intelligence around 1979,
17:00but quit when his wife caught him,
17:02picked it back up for the KGB in 1985,
17:05and then came back one more time in 1999
17:08for Russia's new spy service,
17:10the one that took over after the Soviet Union collapsed.
17:13But here's what made him nearly impossible to catch,
17:17because Hansen never met a Russian face-to-face.
17:20Not once.
17:21He taped garbage bags of classified documents
17:24under a footbridge in Foxtone Park
17:26minutes from his own house
17:28and signaled the drop with a chalk mark on a signpost.
17:31And he never told the Russians his real name.
17:34So for 22 years,
17:36his own handlers had no idea who they were paying.
17:39And he gave them roughly 6,000 pages.
17:42He gave up two Soviet officials
17:45secretly working for the United States,
17:47Valery Martinov and Sergei Moterin.
17:50Both were called home to Moscow.
17:52Both were shot in the back of the head.
17:55And he gave up the eavesdropping tunnel
17:57American intelligence had dug
17:59underneath the Soviet embassy in Washington.
18:01And by the spring of 1999,
18:04Hansen knew they were closing in,
18:06because he went digging through the Bureau's own case files
18:09and found the investigation that was hunting him.
18:12Oh, hey!
18:14Nothing to see here!
18:16And he went right back to work.
18:19But in the end,
18:20the FBI found him,
18:22because they paid a Russian source
18:24for a file out of Moscow.
18:25And inside was the recording of the mole's voice.
18:28And the agents who played it recognized him right away.
18:32So on February 18th, 2001,
18:36Robert Hansen drove out to Foxtone Park,
18:38taped one more package under the footbridge,
18:41and started walking back toward his car.
18:43And the agents came out of the trees.
18:46He didn't run.
18:47He didn't argue.
18:49He just looked at the men he'd worked beside for 25 years
18:52and asked them,
18:53what took you so long?
18:55The Justice Department called it
18:57possibly the worst intelligence disaster in U.S. history.
19:01He pleaded guilty
19:02and got 15 consecutive life sentences with no parole.
19:06And he died at ADX Florence in 2023.
19:10But did you notice that the last four stories on this list
19:13all came out of the same war?
19:15Because Philby, the Rosenbergs, Ames, and Hansen
19:19were all pieces on the same board.
19:21A 45-year standoff
19:23that came closer to wiping out the human race
19:26than most people realize.
19:27This is the Cold War Explained.
19:30From a nuclear arms race
19:32that could destroy the world in seconds,
19:34to a concrete wall
19:35that imprisoned millions of Germans,
19:37to the officer who prevented World War III
19:40by refusing to press the red button.
19:42So click right here
19:43and let's go find out
19:45what all that stolen paperwork was actually for.
19:47because of the war.
19:48That was a very strong

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