Tomas Pueyo Profile picture
Jun 19 20 tweets 7 min read Read on X
Can there be an invasion of Iran? Hardly. Two maps explain why, and also why Iran is the way it is today, whether its regime will fall, what other superpowers will do, and in general why Iran is the way it is today

1. Iran is a mountain & desert fortress Image
Here's a topograhic map
West: Zagros
North: Caspian Sea + Caucasus, Albroz, & Kopet-Dag mountains + Karakum Desert
East: Mountains + Dasht-e Kavir / Lut Deserts
South: Sea

The only truly exposed area is the southwestern corner of Khuzestan, which is a swamp Image
The biggest superpowers lie to the west, and there the very broad Zagros make it really hard to conquer Iran. The mountain range is tall and wide, making logistics similar to Afghanistan. Very hard.

Iraq learned it the hard way when it tried to attack there in 1980 Image
Here are images of the Dasht-e Kavir Desert. It's one of the hottest and driest places in the world. Only one invasion ever succeeded following this path Image
2. Iran is in the middle of a highway
If you want to go from Europe / Middle East to China / the Steppes / India, you have to go either through Iran or through the narrow pass in the north between the Caspian Sea and the Ural Mountains. Dozens of armies chose Iran Image
This means that, despite the defense provided by the mountains in history, Persia (former name for Iran) was invaded dozens of times. But only 2 invasion paths were consistently successful
• 5 from Khuzestan in the southwest
• 7 from the desertic steppes in the northeast Image
Iran is not worried about the northeast: Nomadic invasions stopped after gunpowder. That region is now weak & safe, no strong enemies

In general, it's reasonably safe in the southeast region of Khuzestan: In the last 1400 years, only the British successfully invaded Iran there
Still this is where Iran is most exposed:
• Flatland (albeit swampy)
• Fertile (Mesopotamia)
• Most of the oil is there
• Easy access from the sea
• It's ethnically Arab (and not Persian) Image
Image
But the ethnic diversity is not only a problem in Khuzestan: Only 60% of Iranians are Persians. A full 25% are Azeri. There are more Azeris in Iran than in Azerbaijan!
And then there are Kurds, Balochis...

Why so many ethinicities? Again, because of the mountains Image
In temperate areas like Europe, the US, or Argentina, ppl live in plains, ideal for cheap transportation, and thus trade and wealth generation

Iran is too hot for that, so ppl live in valleys nearby mountains—which gather moisture from the wind
You can see how the rains are concentrated in the tallest mountains in the west and north

The result is that ppl live in mountains, which makes transportation and infrastructure very expensive, so trade is lower, and the country is poorer
When transportation is expensive, it's not just trade that suffers. When ppl communicate less, they diverge. This is why Iran is so ethnically diverse

This is why the Iranian state is so oppressive: To keep minorities and their nationalism subdued, and the country united Image
OK now imagine you're a Persian leader, safe in your mountains. What would you invade?
East: more deserts and mountains (Afghanistan & Pakistan), only good as a buffer
Northeast: steppes without agriculture
Northwest: mountains
South: mountains & the sea
But to the west... Image
Mesopotamia is so flat because the weight of the Zagros & Anatolia Mountains push land down

Rivers follow that path (like the Indus & Ganges to the east)

And make one of the most fertile lands on Earth
This is why, over history, Persian expansion tended to be in this direction
(expansions to the east & northeast were not economic, but as military buffers)

So historically, Persia's area for expansion is naturally towards the Mediterranean. That was true until just a few years ago. Here was Iran's strongest presence Image
So here you have some of the most important aspects to understand Iran:
• In a highway, invaded many times, it's very wary of foreign invaders
• It feels safe from invasions, perched in its mountains
• These mountains also make it poor though
• And ethnically diverse
• Which begets a strong oppressive authoritarian state

All this tells you Iran's main priorities:
1. Secure borders against foreign powers, especially Khuzestan
2. Keep internal unity
3. Freedom from foreign influence
4. Trade oil
5. Project power towards the Med
Of those, it has achieved 1 and 2, it's been fighting to achieve 3 since the 1979 Revolution, has suffered in 4 because of that, and has attempted 5 but failed, mainly because of Israel

What does that say about the current war?
1. Neither the US nor Israel will ever invade Iran. All 3 countries know this. This war will be limited to air fights and special operations.

2. The regime can fall because it's been oppressive for decades, ppl are poor, and there's lots of ethnic diversity
Much more about this—and about Iran and the war with Israel—in Uncharted Territories


More things I'm covering:
• Why Israel attacked now
• Was Iran getting a nuclear bomb?
• When will the war end?
• Will there be regime change?
& moreunchartedterritories.tomaspueyo.com/p/iran

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More from @tomaspueyo

Aug 14
Moscow is one of the weirdest capitals:
• Biggest European city
• Extremely cold
• Little farmland
• To Russia's extreme west
• Not on a coast or main river

How did it create the biggest country on Earth?

It involves horse archers, human harvesting & tiny animals 🧵
The first shocking fact is that Russia is so far north it's at the edge of arable land. How can you create a capital with so little food? Why not in the middle of the most fertile area on Earth? Image
This far north is extremely cold
Moscow is the 3rd coldest capital in the world and by far the biggest: with 20M ppl, its metro population is 8x bigger than the 2nd biggest cold capital, Stockholm!Image
Read 20 tweets
Jul 28
This map tells you how a seemingly innocent difference, like wheat vs rice eating, can have dramatic political, economic, and cultural ramifications:
🧵 Image
The areas that harvest wheat vs rice are different. Why?
Because of climate
Rice needs heat and lots of water. Ideally, flooding the fields to also kill weeds. Rice dies with frost.

Wheat resists it well, prefers cooler temperatures, but dies when it's flooded Image
Read 12 tweets
Jul 7
Did you know the West's trade deficits to China are not recent, but started 2000 years ago? This is the story of how silk, porcelain, tea, opium, and silver have determined the history of the world 🧵
The Romans already complained about deficits to China! Mainly because of silk Image
Back then the Chinese already preferred manufacturing and selling products than consuming foreign products. Chronicler Solinus ~200 AD: The Chinese "prefer only to sell their products, but do not like to buy our goods."Image
Read 12 tweets
Jun 25
Why did 🇮🇱Israel strike 🇮🇷Iran now, and not months or years ago or in the future?

A unique combination of a dozen factors converged to make the moment unique for 🇮🇱Israel: 🧵
1. No Hamas to its southwest
2. No Hezbollah to its north
3. No Assad threat to the northeast
4... Image
4. No more Syrian army to attack 🇮🇱Israel's planes: As the new forces of HTS took over Syria, Israel bombed all the existing Syrian military. No more fighter jets or surface-to-air missiles to threaten 🇮🇱Israel Image
5. Ability to fly over Syria to refuel
This is critical, because 🇮🇷Iran is ~600-1000 miles away from 🇮🇱Israel, so 1200-2000 miles round trip

The range of Israel’s stealth F35 is only about 1,350 mi
To operate inside 🇮🇷Iran, 🇮🇱Israel needed refueling over Syria Image
Image
Read 7 tweets
Jun 23
Was 🇮🇷trying to get a nuclear bomb?

1. From Feb 2025 to Jun 2025, it increased its amount of enriched uranium by 50%
2. It now had 400kg of highly enriched uranium, enough for 9-10 bombs
3. This is 60% enriched uranium. Fuel only requires 5% enrichment.
4... 🧵
4. It's easy to go from 60% to 90% (weapons grade), it only takes weeks
5. The only country on Earth with such enriched uranium and without a bomb is 🇮🇷Iran
6. The IAEA (nuclear watchdog) found 3 secret nuclear sites
7. When 🇮🇷Iran didn't respond to this accusation, the IAEA censured it
8. 🇮🇷Iran responded to the censoring by saying it would open a 3rd enrichment site in a secret spot
Read 9 tweets
Jun 22
Now that the 🇺🇸US has bombed 3 of 🇮🇷Iran's nuclear sites, where will the war go from here?
It depends on 🇮🇱Israel: 🧵
🇮🇷Iran never wanted the war, and its forces are being decimated. Its ability to send missiles to 🇮🇱Israel is being degraded every day. If it could sign a ceasefire while saving face, it would Image
Meanwhile, 🇮🇱Israel has kept striking Iran non stop. Its daily airstrikes didn't go down substantially in the first few days. Its ability to keep striking 🇮🇷Iran remains unabated

So when will it stop? Image
Read 13 tweets

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