The primary language in Iran is Persian, also called Farsi

Persia was officially called Iran by the international community in 1935

At the request of Reza Shah, the international community began using "Iran"—the name Iranians had always called their country—replacing the Western term "Persia." The change reflected a broader push for national identity and modernization under the Pahlavi dynasty.

'Velayat-e faqih' is the religious doctrine that has governed Iran since the 1979 revolution

Meaning "guardianship of the Islamic jurist," the doctrine transfers all political and religious authority to the Shia clergy, with the supreme leader holding ultimate power over the state. Developed by Khomeini in the 1970s, it has served as the foundation of Iran's government since the revolution.

Iran became a constitutional monarchy in 1906

A popular revolution forced the ruling Qajar Shah—a dynasty that had governed Iran since the late 18th century—to sign a constitution and establish a parliament, marking Iran's first major step toward democratic governance and limiting the monarchy's absolute power.

Iranians voted overwhelmingly to establish an Islamic Republic in March 1979

Just weeks after Khomeini's return, Iran held a national referendum to replace the monarchy with an Islamic Republic, and over 98% voted in favor (though the vote was criticized). The vote formalized the revolution's outcome, laying the foundation for a theocratic government that remains in place today.

Mohammad Reza Shah Pahlavi ruled Iran for nearly four decades before being ousted by the revolution

The last Shah of Iran came to power in 1941 and pursued rapid Westernization through his controversial reforms. His authoritarian rule, backed by the US, and his feared secret police, SAVAK, fueled mass resentment that ultimately drove him from power in 1979.

Iraq invaded Iran in 1980, drawing the new Islamic Republic into a devastating eight-year war

Just a year after the revolution, Saddam Hussein invaded Iran, hoping to exploit its post-revolutionary instability. The brutal conflict killed hundreds of thousands in one of the century's deadliest conflicts and forced Khomeini's government to consolidate power.

The Iranian Revolution relied largely on nonviolent tactics

Despite thousands of unarmed protesters killed by the Shah's forces, the revolution relied overwhelmingly on nonviolent tactics, including strikes, demonstrations, and civil disobedience, with up to 9 million Iranians peacefully taking to the streets, making it one of history's largest protest movements by population percentage.

Ayatollah Khamenei ruled Iran for 36 years after succeeding Khomeini as Supreme Leader

When Khomeini died in 1989, Ali Khamenei was appointed acting supreme leader on the same day. He served in this position until his death in February 2026, shaping Iran for nearly four decades.

Iran's Revolutionary Guard Corps became one of the most powerful forces in the Middle East

Created after the 1979 revolution to protect the new Islamic Republic, the IRGC grew into a force that controls Iran's ballistic missile arsenal, funds, and arms regional proxy groups such as Hezbollah and Hamas, and answers directly to the supreme leader.

Iran's 1979 revolution sparked a second oil shock—and reconfigured global energy markets.

Ayatollah Khomeini returned to Iran on Feb. 1, 1979, after 14 years in exile

Greeted by millions of Iranians flooding the streets of Tehran, Khomeini's return was a defining moment of the revolution. Within days, he appointed a rival prime minister, effectively dismantling the last remnants of the Shah's government and consolidating clerical rule over the new Islamic Republic.

Mohammad Mosaddegh was ousted in a CIA-backed coup in 1953

Iran's democratically elected prime minister, Mosaddegh, nationalized the country's oil industry in 1951, challenging British and American control of Iran's resources. The CIA and British intelligence orchestrated a coup that ousted him and reinstated the Shah, fueling decades of Iranian distrust of the West.

The 2007 animated film 'Persepolis' captures the Iranian Revolution through a child's eyes

The critically acclaimed film, based on Marjane Satrapi's graphic memoir, traces Iran's transformation from the Shah's rule through the revolution and its turbulent aftermath, showing how seismic political change shapes ordinary lives.

Ayatollah Khomeini led the ideological opposition to the Shah from exile

Exiled in 1964 for opposing a law that granted diplomatic immunity to US military personnel in Iran, Khomeini built a large following by smuggling recorded sermons into Iran on cassette tapes. He aimed to replace the monarchy with an Islamic republic governed by religious law.

The Shah fled Iran in January 1979, ending nearly 38 years of Pahlavi rule

On Jan. 16, 1979, Mohammad Reza Shah left Iran with his wife, officially for a "vacation"—one he would never return from. His departure marked the effective collapse of the monarchy, as millions celebrated in the streets and power swiftly shifted to Khomeini's revolutionary movement.

The 1979 Iranian Revolution inspired other Islamist movements and alarmed Sunni governments

By establishing the world's first modern Islamic theocracy, the revolution inspired Islamist movements across the region and alarmed Sunni Arab governments. The resulting rivalry between Shia Iran and Sunni Saudi Arabia has since fueled proxy conflicts in Lebanon, Iraq, Syria, and Yemen that persist today.

Mosaddegh nationalized Iran's oil industry in 1951, threatening Western control of the country's resources

Before nationalization, British companies controlled most of Iran's oil wealth, with little revenue returned to Iranians. Mosaddegh's decision made him a national hero at home but triggered a Western-led embargo and ultimately contributed to the coup that removed him from power.

See how the rivalry between Iran and Israel has remade the Middle East

This 2025 documentary explores how the relationship between Iran, Israel, and the United States has shaped Middle Eastern geopolitics for decades. The film covers events leading up to and following the 2025 12-day war involving these nations.

See a timeline of the events that shaped the Iranian Revolution

From a defamatory newspaper editorial that sparked protests in January 1978 to Khomeini's return from exile and the Shah's flight from Iran in 1979, this timeline traces the rapidly escalating chain of events—protests, crackdowns, and political collapses—that toppled one of the Middle East's most powerful monarchies.

Hear how the US and Iran went from close allies to bitter adversaries after the 1979 revolution.

A lot of high fantasy relies on constructed languages

In "Lord of the Rings," there's Elvish. In "Avatar," it's Na'vi. In "Game of Thrones," it's Dothraki. The languages draw readers into these fictional stories, imbuing the worlds with a sense of realism. Linguist John McWhorter argues these are real languages because they have grammatical rules and evolve over time.

Air pollution in war-torn Iran unleashes invisible toxic threats

Burning oil depots and bombed buildings are endangering the health of millions of people during the 2026 attacks. Heavy metals from munitions and other damaged materials are going airborne, but the exact health implications depends on dose, wind currents, and other factors including preexisting health conditions.

The UN found that the Islamic Republic of Iran used genocidal tactics after the revolution

A 2024 report classified Iran's mass executions of political prisoners in the 1980s as genocide and crimes against humanity, finding that thousands were arbitrarily killed under Khomeini's orders by "death committees" targeting perceived religious and political enemies.

A report found that the 2026 Iran war is the largest oil supply disruption in history.

Oil nationalization triggered the CIA‑backed 1953 coup in Iran

NPR's Four Days in August podcast recounts the four days of covert CIA‑UK operations in Iran that toppled Prime Minister Mossadegh in August 1953. Threats of Iranian oil nationalization were a major driver of the decision to facilitate regime change.

Beyond oil, the Iran war has pushed up costs on fertilizer, prescriptions, and mortgages.

Mapping projected food inflation across the world in 2026

Iran tops the list of hardest-hit countries with a projected 56% inflation on food prices in 2026, followed by Argentina (33%) and Turkey (25%). In the opposite direction is Niger, whose food inflation is expected to drop 18% as a result of strong harvests and financial stabilization. The global average of food inflation is expected to be 3%.

Iran-Iraq war drained over $1T from the combined economies of Iran and Iraq

Across eight years (1980-88), Iran and Iraq each lost about $500 B in GDP, infrastructure destruction, military expenses, disrupted oil exports, and mounting debt—totaling over $1 T in economic damage.

Mapping the Middle East showing Sunni and Shia populations by country

France24's interactive visualization shows where each branch of Islam predominates across the region, from Iran's Shia majority to Saudi Arabia's Sunni dominance. The map helps make Middle Eastern politics (and conflicts) more legible.

Many religions have core majorities in certain countries

Though most religions have members across the world, they also have major concentrated populations in specific nations. For example, 95% of Hindus live in India, while 85% of the world's Jews live in Israel and the US.

Why have gas prices surged nearly 27% since the Iran war began?

Oil passing through the Strait of Hormuz makes up only about 7% of US crude imports. However, crude oil prices account for 51% of the cost of a gallon of gas in the US. US refiners pay the Brent crude futures price, even for domestic drilling.

The Greek island of Sfyria's dying whistling language

Sfyria is a whistled version of modern Greek native to a corner of Euboea, the second largest island of Greece, and is used for long-distance communication. Its name derives from the Greek word sfyrizo, meaning to whistle. The language's practitioners are fighting to preserve its use and legacy, as it is one of the world's most endangered. Learn more about their fight in this article.

The Silk Road was an ancient series of trade routes between East Asia and Europe

Founded by the Han Chinese in 130 BCE, the Silk Road was a series of trade routes connecting eastern China with the Mediterranean and the rest of Europe. The Persians created a predecessor series of routes, but the Chinese solidified the Silk Road, where travelers traded commerce, ideas, and more.

Charting the countries with large Sikh populations

While the vast majority of contemporary Sikhs live in Punjab, India, millions have moved elsewhere in the world, especially in anglophone countries. This chart shows which countries host the largest communities of the Sikh diaspora in the world.

In 1979, Iranian students seized the US Embassy in Tehran, holding 52 Americans hostage for 444 days

Outraged by the US decision to allow the exiled Shah to enter the United States for medical treatment, student protesters stormed the embassy in November 1979. The crisis paralyzed the Carter presidency and ended with a negotiated release on the day of Ronald Reagan's inauguration.

Visitors of the International Space Station are trained in English and Russian

Different space agencies develop different modules of the ISS, meaning their controls, documentation, and instrumentation are not always written in English. Because the first modules were delivered using US and Russian spacecraft, astronauts have been historically trained in both languages.

The Middle East's cold war, explained

The Middle East is one of the most complex regions in the world, including a complicated web of conflicts and actors. Two countries, Saudi Arabia and Iran, have torn apart the region by supporting opposing sides in other countries and indirectly...

The land where Greece's ancient language survives

In a remote corner of Turkey, locals speak Romeyka, a language with no written form and an "impressive" similarity to ancient Greek. This article details how the language may have survived and highlights the roughly 5,000 Romeyka speakers in the area. Research shows that Romeyka bears a startling resemblance to the Koine Greek spoken at the height of ancient Greek influence between fourth century BCE and fourth century CE.

Explore more than 7,000 of the world's languages

Google collects open-source data on languages, detailing how many known speakers each language has, whether its endangered, and where in the world it is spoken.

Why most Eurovision acts sing in English

Eurovision is intended to be a celebration of diverse cultures from around Europe—and, in the case of Israel and Australia, beyond Europe. But since 1999, most of its participants have sung in English. This episode of "The Allusionist" features Historian Dean Vuletic, who breaks down why so many countries' competitors avoid their native languages.

View the countries with the most internet users, including 94% of those in high-income nations

As of 2025, the four most populous nations—China, India, the US, and Indonesia—are also the ones with the most internet users, collectively accounting for almost half of the 6.04 billion internet users worldwide. This suggests that population size, rather than adoption rate, is a better predictor of online activity.

Learn how governments around the world restrict internet access for their citizens

Various countries around the world, including China, Russia, and Iran, control their local DNS infrastructure, allowing them to block access to online content by preventing the internet "phone book" from finding the IP addresses for specific URLs. Government-controlled internet service providers can also cut off access entirely or throttle specific traffic.

The Sunni-Shia divide has fueled conflict and rivalry throughout the Middle East for centuries

Islam's ancient sectarian split, rooted in a seventh-century dispute over succession following the Prophet Mohammed's death, has shaped modern geopolitics—most visibly in the proxy rivalry between Sunni Saudi Arabia and Shia Iran, whose competition for regional dominance has inflamed conflicts across Syria, Iraq, Lebanon, and Yemen.

CIA factbook on the Middle East

The CIA’s World Factbook provides a comprehensive overview of 19 Middle Eastern nations. A wide range of background information is provided for: Armenia, Azerbaijan, Bahrain, the Gaza Strip, Georgia, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon,...

The Shah used torture and other human rights abuses to maintain power before the revolution

A declassified 1976 US Embassy telegram acknowledged that the Shah held 3,400-3,500 political prisoners, documented torture allegations against the SAVAK secret police, and confirmed press censorship, even as American diplomats sought to minimize human rights concerns for Congress.

More than 300 distinct Native American languages existed at the time of European contact

Indigenous North America exhibited vast linguistic diversity, with over 300 languages spanning dozens of unrelated language families. This variety reflected centuries of distinct cultural development across the continent's many nations and regions.

There are more than 300 separate sign languages worldwide

Each of these languages has its own grammar, vocabulary and cultural associations. American Sign Language, the predominant Deaf language in the US, is part of the broader French Sign Language family, which means it shares historical influences and similarities with French Sign Language (which is called LSF). International Sign is a simplified, makeshift form of communication that borrows from many languages, and it's used at international deaf conferences, among other locations.

As of 2024, the nation with the largest proven oil reserves is Venezuela

According to estimates derived from available geological and engineering data, the South American country possesses about 303 billion barrels of underground crude oil, followed by Saudi Arabia (267.2 billion) and Iran (208.6 billion). Many of the largest reserves are held by members of the Organization of the Petroleum Exporting Countries.

Why is rice so popular?

From Spanish paella to West African jollof rice, rice is a staple in dishes across the world. This colorful animated video dives into the global expansion of rice, which contributes more than 20% of the calories consumed by humans each year. Learn about rice’s beginnings thousands of years ago, the environmental consequences of its popularity, and the potential for positive changes in the future.

Coffee prices have reached record highs in 2026, with experts citing rising costs driven by war and tariffs.