Why is there a war in Afghanistan? The short, medium and long story – BBC News
Media playback is unsupported on your device
The US and the Taliban have signed an agreement aimed at paving the way towards peace in Afghanistan after more than 18 years of conflict.
Under the deal, the US and its Nato allies will withdraw all their troops from the country in 14 months if the hardline Islamic movement upholds its commitments to stop attacks.
But why is the US fighting a war in Afghanistan and why has it lasted so long?
On 11 September 2001, attacks in America killed nearly 3,000 people. Osama Bin Laden, the head of Islamist terror group al-Qaeda, was quickly identified as the man responsible.
The Taliban, radical Islamists who ran Afghanistan and protected Bin Laden, refused to hand him over. So, a month after 9/11, the US launched air strikes against Afghanistan.
As other countries joined the war, the Taliban were quickly removed from power. But they didn't just disappear - their influence grew back and they dug in.
Since then, the US and its allies have struggled to stop Afghanistan's government collapsing, and to end deadly attacks by the Taliban.
"We did not ask for this mission, but we will fulfil it," US President George W Bush said when he announced the first air strikes against Afghanistan on 7 October, 2001. The raids were in response to the 9/11 attacks, which killed 2,977 people in New York, Washington and Pennsylvania.
The mission, he said, was "to disrupt the use of Afghanistan as a terrorist base of operations and to attack the military capability of the Taliban regime".
The first targets were military sites belonging to the hardline Taliban group who ruled the country. Training camps for al-Qaeda, the terror group run by 9/11 plotter Osama Bin Laden, were also hit.
But 18 years on, it's hard to argue the US mission has been fulfilled - the Taliban may play a part in ruling Afghanistan again if peace talks do eventually succeed.
Media playback is unsupported on your device
The Taliban first took control of the capital Kabul in 1996, and ruled most of the country within two years. They followed a radical form of Islam and enforced punishments like public executions.
Within two months of the US and its international and Afghan allies launching their attacks, the Taliban regime collapsed and its fighters melted away into Pakistan.
A new US-backed government took over in 2004, but the Taliban still had a lot of support in areas around the Pakistani border, and made hundreds of millions of dollars a year from the drug trade, mining and taxes.
As the Taliban carried out more and more suicide attacks, international forces working with Afghan troops struggled to counter the threat the re-energised group posed.
In 2014, at the end of what was the bloodiest year in Afghanistan since 2001, Nato's international forces - wary of staying in Afghanistan indefinitely - ended their combat mission, leaving it to the Afghan army to fight the Taliban.
But that gave the Taliban momentum, as they seized territory and detonated bombs against government and civilian targets. In 2018, the BBC found the Taliban was openly active across 70% of Afghanistan.
Afghanistan had been in a state of almost constant war for 20 years even before the US invaded.
In 1979, a year after a coup, the Soviet army invaded Afghanistan to support its communist government. It fought a resistance movement - known as the mujahideen - that was supported by the US, Pakistan, China and Saudi Arabia, among other countries.
In 1989, Soviet troops withdrew but the civil war continued. In the chaos that followed, the Taliban (which means "students" in the Pashto language) sprang up.
Media playback is unsupported on your device
They first rose to prominence in the border area of northern Pakistan and south-west Afghanistan in 1994. They promised to fight corruption and improve security and, at that time, many Afghans were tired of the excesses and infighting of the mujahideen during the civil war.
It's thought the Taliban first appeared in religious schools, mostly funded by Saudi Arabia, which preached a hardline form of Islam.
They enforced their own austere version of Sharia, or Islamic law, and introduced brutal punishments. Men were made to grow beards and women had to wear the all-covering burka.
The Taliban banned television, music and cinema and disapproved of girls' education.
And because the Taliban gave shelter to militants from the al-Qaeda group, it made them an immediate target for an attack by US, Afghan and international forces in the wake of 9/11.
There are many reasons for this. But they include a combination of fierce Taliban resistance, the limitations of Afghan forces and governance, and other countries' reluctance to keep their troops for longer in Afghanistan.
At times over the past 18 years, the Taliban have been on the back foot. In late 2009, US President Barack Obama announced a troop "surge" that saw the number of American soldiers in Afghanistan top 100,000.
The surge helped drive the Taliban out of parts of southern Afghanistan, but it was never destined to last for years.
As a result, the Taliban were able to regroup. When international forces withdrew from fighting, Afghan forces left to lead the charge were easily overwhelmed. To make matters worse, Afghanistan's government, that is full of tribal division, is often hamstrung.
Media playback is unsupported on your device
The BBC World Service's Dawood Azami says there are five main reasons the war is still going on now. They include:
There's also the role played by Afghanistan's neighbour, Pakistan.
There's no question the Taliban have their roots in Pakistan, and that they were able to regroup there during the US invasion. But Pakistan has denied helping or protecting them - even as the US demanded it do more to fight militants.
The group could be making as much as $1.5bn (1.2bn) a year, a huge increase even within the past decade. Some of this is through drugs - Afghanistan is the world's largest opium producer, and most opium poppies - used for heroin - are grown in Taliban-held areas.
But the Taliban also make money by taxing people who travel through their territory, and through businesses like telecommunications, electricity and minerals.
Foreign countries, including Pakistan and Iran, have denied funding them, but private citizens from the region are thought to have done so.
Extremely.
It's difficult to say how many Afghan troops have died - the numbers are no longer published. But in January 2019, Afghan President Ashraf Ghani said 45,000 members of the security forces had been killed since 2014.
Nearly 3,500 members of the international coalition forces have died since the 2001 invasion, more than 2,300 of them American.
The figures for Afghan civilians are more difficult to quantify. A UN report in February 2019 said more than 32,000 civilians had died. The Watson Institute at Brown University says 42,000 opposition fighters have died.
The same institute says conflicts in Iraq, Syria, Afghanistan and Pakistan have cost the US $5.9 trillion since 2001.
The US is still conducting air strikes against the Taliban, instigated by the third president to oversee the war, Donald Trump. But he is keen to reduce troop numbers before he faces another election in November 2020.
The Taliban now control much more territory than they did when international troops left Afghanistan in 2014.
Many in Washington and elsewhere fear that a full US troop pull-out would leave a vacuum that could be filled by militant groups seeking to plot attacks in the West.
The Afghan people, meanwhile, continue to bear the brunt of the long and bloody conflict.
Excerpt from:
Why is there a war in Afghanistan? The short, medium and long story - BBC News
- Afghanistan drop Nabi from T20Is and Rasooli from white-ball squads - ESPN - October 2nd, 2026 [October 2nd, 2026]
- Emergency Relief After Devastating Floods in Nuristan, Afghanistan - All Hands & Hearts - October 2nd, 2026 [October 2nd, 2026]
- Afghanistan condemns Pakistan as U.N. mission says airstrikes killed 10 civilians, "most of them children" - CBS News - October 2nd, 2026 [October 2nd, 2026]
- Afghanistan Country Report: The State of the Humanitarian System 2026 - ReliefWeb - October 2nd, 2026 [October 2nd, 2026]
- Deaths reported as Pakistan, Afghanistan engage in fresh clashes - Daily Sabah - October 2nd, 2026 [October 2nd, 2026]
- Beyond the battlefield: women reflect on their service in Afghanistan - DVA - October 2nd, 2026 [October 2nd, 2026]
- COMMENT: Will Afghanistan Change? - Dawn - October 2nd, 2026 [October 2nd, 2026]
- Pakistan says 22 terrorists killed and weapons seized in raids on Afghanistan - Arab News - October 2nd, 2026 [October 2nd, 2026]
- Eighth Moscow Format Meeting on Afghanistan to Be Held in Russia - 8AM Media - October 2nd, 2026 [October 2nd, 2026]
- Why did Pakistan strike Afghanistan, and what is Operation Ghazab lil-Haq? - Latest news from Azerbaijan - October 2nd, 2026 [October 2nd, 2026]
- Moscow Format meeting on Afghanistan expected next week amid regional tensions - Amu TV - October 2nd, 2026 [October 2nd, 2026]
- The story behind the first CIA officers in Afghanistan after 9/11 and the Russian chopper that flew them in - CBS News - September 28th, 2026 [September 28th, 2026]
- Nepal pull off stunning upset, beat Afghanistan by five wickets in Asian Games 2026 - The Times of India - September 28th, 2026 [September 28th, 2026]
- Afghanistan says it killed 28 fighters, wounded 32 after group crosses over from Pakistan - The Jerusalem Post - September 28th, 2026 [September 28th, 2026]
- The Russian helicopter that carried the first CIA officers into Afghanistan after 9/11 - 24 - September 28th, 2026 [September 28th, 2026]
- Afghanistan, Terrorism, And The Security Challenge Before UNGA 81 OpEd - Eurasia Review - September 28th, 2026 [September 28th, 2026]
- Afghanistan Reduced Opium Production: What Was The Impact On Drug Trafficking? - Analysis - Eurasia Review - September 28th, 2026 [September 28th, 2026]
- Nearly 30 fighters killed, 32 captured: Why Afghanistan, Pakistan are fighting again - The Indian Express - September 28th, 2026 [September 28th, 2026]
- Today in History: September 27, Taliban take power in Afghanistan - Star Beacon - September 28th, 2026 [September 28th, 2026]
- The story of the first CIA officers in Afghanistan after 9/11 - CBS News - September 28th, 2026 [September 28th, 2026]
- Today in History: September 27, Taliban take power in Afghanistan - The Covington News - September 28th, 2026 [September 28th, 2026]
- Asian Games: Rain threatens Shreyas Iyer-led Indias title defence ahead of Afghanistan quarterfinal - The Times of India - September 28th, 2026 [September 28th, 2026]
- India vs Afghanistan Hourly Weather Update: What Happens If Asian Games Quarterfinal Is Washed Out - NDTV Sports - September 28th, 2026 [September 28th, 2026]
- Afghanistan Freedom Front Claims Five Taliban Fighters Killed or Wounded in Sar-e-Pul - 8am.media - September 28th, 2026 [September 28th, 2026]
- Nisshin weather forecast for India vs. Afghanistan: Chances of rain, average temperature for IND vs. AFG Asian Games 2026 quarterfinal -... - September 28th, 2026 [September 28th, 2026]
- India vs Afghanistan 2nd Quarter-Final, Asian Games 2026: Live streaming, playing 11, squads, weather and - The Economic Times - September 28th, 2026 [September 28th, 2026]
- Mosque attack highlights evolving extremism landscape that has brought Pakistan-Afghanistan ties to crisis point - The Conversation - September 26th, 2026 [September 26th, 2026]
- Afghanistan and Pakistan have gone from friends to foes. Here's why - reuters.com - September 26th, 2026 [September 26th, 2026]
- Pakistans Punitive Gamble in Afghanistan: An Open War With No End in Sight - The Diplomat Asia-Pacific Current Affairs Magazine - September 26th, 2026 [September 26th, 2026]
- Afghanistan vs Nepal Live Streaming: When And Where To Watch AFG vs NEP Asian Games 2026 Match - NDTV Profit - September 26th, 2026 [September 26th, 2026]
- Taliban: More Than 300 Families Forcibly Returned to Afghanistan - 8am.media - September 26th, 2026 [September 26th, 2026]
- At least four killed as Pakistan launches airstrikes on Afghanistan in middle of night - The Independent - September 26th, 2026 [September 26th, 2026]
- Nepal climbs to 14th in ICC T20 rankings after historic victory over Afghanistan - Nepalnews.com - September 26th, 2026 [September 26th, 2026]
- Let History Not Repeat Itself In Afghanistan - The Friday Times - September 26th, 2026 [September 26th, 2026]
- Pakistan-Afghanistan tensions: Airstrikes and retaliatory attacks intensify - Modern Ghana - September 26th, 2026 [September 26th, 2026]
- Pakistan says it struck 10 sites in Afghanistan after accusing Kabul of drone attacks - AP News - September 24th, 2026 [September 24th, 2026]
- Afghanistan cyclist who disguised herself as a man to escape Taliban wins Asian Games silver | Hindustan Times - hindustantimes.com - September 24th, 2026 [September 24th, 2026]
- Pakistan says it launched air strikes on Afghanistan over drone attacks - Reuters - September 24th, 2026 [September 24th, 2026]
- Five years on, girls in Afghanistan are still locked out of learning - UNICEF - September 24th, 2026 [September 24th, 2026]
- Afghanistan Reduced Opium Production. What Was the Impact on Drug Trafficking? - Geopolitical Monitor - September 24th, 2026 [September 24th, 2026]
- Japan vs Afghanistan Live Streaming: When And Where To Watch JPN vs AFG Asian Games 2026 Match - NDTV Profit - September 24th, 2026 [September 24th, 2026]
- Pakistan strikes Afghanistan after accusing it of attacks - CoastTV - September 24th, 2026 [September 24th, 2026]
- Pakistan Says More Than 24 Terrorist Groups Are Operating in Afghanistan - KabulNow - September 24th, 2026 [September 24th, 2026]
- Pakistan conducted strikes at 10 locations in Afghanistan in response to recent drone attacks: info minister - Dawn - September 24th, 2026 [September 24th, 2026]
- Pakistan strikes Afghanistan after accusing it of attacks - northeastNOW - September 24th, 2026 [September 24th, 2026]
- Pakistan Urges Immediate Action Against Terrorist Safe Havens in Afghanistan - Afghanistan International - September 24th, 2026 [September 24th, 2026]
- Pakistan carries out airstrikes on 10 sites in Afghanistan: Says it responded to drone attacks; Taliban fir... - Bhaskar English - September 24th, 2026 [September 24th, 2026]
- Remarks at a UN Security Council Briefing on the Situation in Afghanistan - United States Mission to the United Nations (.gov) - September 22nd, 2026 [September 22nd, 2026]
- Pakistan conducts airstrikes in eastern Afghanistan in retaliation for terrorist attacks - longwarjournal.org - September 22nd, 2026 [September 22nd, 2026]
- Transparent Tribe targets India, Afghanistan with new malware in Operation RapidRust - SC Media - September 22nd, 2026 [September 22nd, 2026]
- Pakistan Says 28 Killed in Airstrikes on Three Targets in Afghanistan - U.S. News & World Report - September 22nd, 2026 [September 22nd, 2026]
- UN Rights Chief Calls for Action on Gender Apartheid in Afghanistan - thekabultribune.com - September 22nd, 2026 [September 22nd, 2026]
- Abhishek Sharma hits record T20 ton as India beat Afghanistan by 127 runs - Al Jazeera - September 22nd, 2026 [September 22nd, 2026]
- Norway Gives $1.63 Million to Afghanistan Humanitarian Fund - thekabultribune.com - September 22nd, 2026 [September 22nd, 2026]
- UN Security Council again warns of terrorist threats emanating from Afghanistan - - - September 22nd, 2026 [September 22nd, 2026]
- Rights Groups Call on UN to Extend Afghanistan Rapporteurs Mandate, Expand Scrutiny - KabulNow - September 22nd, 2026 [September 22nd, 2026]
- Pakistan Carries Out Airstrikes in Eastern Afghanistan, Killing Three - KabulNow - September 22nd, 2026 [September 22nd, 2026]
- Pakistan says 28 killed in airstrikes on Afghanistan - daily-sun.com - September 22nd, 2026 [September 22nd, 2026]
- Malala Yousafzai urges world not to turn back on women in Afghanistan during event with McEntee - The Journal - September 22nd, 2026 [September 22nd, 2026]
- Pakistan says 28 killed in airstrikes on three targets in Afghanistan - The Business Standard - September 22nd, 2026 [September 22nd, 2026]
- Al-Qaeda regroups in Afghanistan, 25 years after 9/11 - The Washington Post - September 13th, 2026 [September 13th, 2026]
- 25 years after 9/11, al-Qaeda said regrouping in Taliban-run Afghanistan - The Times of Israel - September 13th, 2026 [September 13th, 2026]
- 9/11 changed Afghanistan, but now it's back where it started - PBS - September 13th, 2026 [September 13th, 2026]
- Afghanistan vs India T20 2026: Know schedule, where to watch AFG vs IND live streaming and telecast - olympics.com - September 13th, 2026 [September 13th, 2026]
- Woman deported to Afghanistan in first use of Alien Terrorist Removal Court - The Washington Post - September 13th, 2026 [September 13th, 2026]
- Where to watch India vs. Afghanistan live stream, TV channel, start time and lineups for 1st T20I - Yahoo Sports Canada - September 13th, 2026 [September 13th, 2026]
- Afghanistan pacer raring to go after two years out - ICC - September 13th, 2026 [September 13th, 2026]
- Why India are playing as 'away' team in Delhi for Afghanistan T20I series: Explained - The Times of India - September 13th, 2026 [September 13th, 2026]
- India face tough selection calls as Afghanistan play hosts in Delhi - Cricinfo - September 13th, 2026 [September 13th, 2026]
- Naveen-ul-Haq raring to go on return to Afghanistan squad after two-year injury absence - Yardbarker - September 13th, 2026 [September 13th, 2026]
- Why Vande Mataram was sung before National Anthem in India vs Afghanistan T20I in Delhi - EXPLAINED - The Times of India - September 13th, 2026 [September 13th, 2026]
- India vs Afghanistan 1st T20I Live Streaming: Check when and where to watch, probable playing XI, head-to- - The Economic Times - September 13th, 2026 [September 13th, 2026]
- India vs Afghanistan LIVE streaming info: Where to watch IND v AFG 1st T20I? - Sportstar - September 13th, 2026 [September 13th, 2026]
- Afghanistan vs India 1st T20I Live Streaming: When, where and how to watch AFG vs IND live on TV and online | Cricket - Hindustan Times - September 13th, 2026 [September 13th, 2026]
- India vs Afghanistan Live Streaming, 1st T20I Live Telecast: When And Where To Watch Live - NDTV Sports - September 13th, 2026 [September 13th, 2026]
- India vs Afghanistan Free Live Telecast, 1st T20I Live Streaming: Where And Where To Watch - NDTV Sports - September 13th, 2026 [September 13th, 2026]
- India vs Afghanistan live streaming: How to watch 1st T20I live in India? - Business Standard - September 13th, 2026 [September 13th, 2026]
- 25 Years After 9/11, Al Qaeda Still Has a Home in Afghanistan - The New York Times - September 11th, 2026 [September 11th, 2026]
- The Forever War in Afghanistan: 25 Years in Pictures - The New York Times - September 11th, 2026 [September 11th, 2026]
- After 9/11, I lived through Australias long war in Afghanistan. There are lessons the world must learn | Shadi Khan Saif - theguardian.com - September 11th, 2026 [September 11th, 2026]