(CNN) Here's a look at the Taliban, a Sunni Islamist organization operating primarily in Afghanistan and Pakistan.
The group's aim is to impose its interpretation of Islamic law on Afghanistan and remove foreign influence from the country.
Taliban, in Pashto, is the plural of Talib, which means student.
Most members are Pashtun, the largest ethnic group in Afghanistan.
Mawlawi Haibatullah Akhundzada has been the Taliban's supreme leader since 2016.
Reclusive leader Mullah Mohammed Omar led the Taliban from the mid-1990s until his death in 2013.
The exact number of Taliban forces is unknown.
1979-1989 - The Soviet Union invades and occupies Afghanistan. Afghan resistance fighters, known collectively as mujahedeen, fight back.
1989-1993 - After the Soviet Union withdraws, fighting among the mujahedeen erupts.
1994 - The Taliban forms, comprised mostly of students and led by Mullah Mohammed Omar.
November 1994 - The Taliban take control of the city of Kandahar.
September 1996 - The capital, Kabul, falls to the Taliban.
1996-2001 - The group imposes strict Islamic laws on the Afghan people. Women must wear head-to-toe coverings, are not allowed to attend school or work outside the home and are forbidden to travel alone. Television, music and non-Islamic holidays are banned.
1997 - The Taliban issue an edict renaming Afghanistan the Islamic Emirate of Afghanistan. The country is only officially recognized by three countries: Pakistan, Saudi Arabia and the United Arab Emirates.
1997- Omar forges a relationship with Osama bin Laden, the leader of al Qaeda, who then moves his base of operations to Kandahar.
August 1998 - The Taliban capture the city of Mazar-e-Sharif, gaining control of about 90% of Afghanistan.
October 7, 2001 - Less than a month after terrorists linked to al Qaeda carry out the 9/11 attacks, American and allied forces begin an invasion of Afghanistan called Operation Enduring Freedom.
December 2001 - The Taliban lose its last major stronghold as Kandahar falls. Hamid Karzai is chosen as interim leader of Afghanistan.
November 3, 2004 - Karzai is officially elected president of Afghanistan.
December 2006 - Senior Taliban leader Mullah Akhtar Mohammad Osmani is killed in an airstrike by the United States.
December 11, 2007 - Allied commanders report that Afghan troops backed by NATO have recaptured the provincial town of Musa Qala from Taliban control.
October 21, 2008 - Foreign Minister Saud al-Faisal confirms that Saudi Arabia hosted talks between Afghan officials and the Taliban in September. It is reported that no agreements were made.
April 25, 2011 - Hundreds of prisoners escape from a prison in Kandahar by crawling through a tunnel. The Taliban take responsibility for the escape and claim that 541 prisoners escaped, while the NATO-led International Security Assistance Force says the number is 470.
September 10, 2011 - Two Afghan civilians are killed, and 77 US troops are wounded in a truck bombing at the entrance of Combat Outpost Sayed Abad, an ISAF base in Afghanistan's Wardak province. The Taliban claim responsibility.
September 13, 2011 - Taliban militants open fire on the US embassy and ISAF headquarters in central Kabul. Three police officers and one civilian are killed.
February 27, 2012 - The Taliban claim responsibility for a suicide bombing near the front gate of the ISAF base at the Jalalabad airport in Afghanistan. At least nine people are killed and 12 are wounded in the explosion. The Taliban say the bombing is in retaliation for the burning of Qurans by NATO troops.
June 18, 2013 - An official political office of the Taliban opens in Doha, Qatar's capital city. The Taliban claim they hope to improve relations with other countries and head toward a peaceful solution in Afghanistan.
September 21, 2013 - A Pakistani official announces that Mullah Abdul Ghani Baradar, one of the founding members of the Taliban, has been released from prison. Baradar had been captured in Karachi, Pakistan, in 2010.
May 31, 2014 - The United States transfer five Guantánamo Bay detainees to Qatar in exchange for the release of US Army Sgt. Bowe Bergdahl. It is believed Bergdahl was being held by the Taliban and the al Qaeda-aligned Haqqani network in Pakistan. The detainees released are Khair Ulla Said Wali Khairkhwa, Mullah Mohammad Fazl, Mullah Norullah Nori, Abdul Haq Wasiq and Mohammad Nabi Omari.
July 29, 2015 - An Afghan government spokesman says in a news release that Taliban leader Omar died in April 2013 in Pakistan, citing "credible information." A spokesman for Afghanistan's intelligence service tells CNN that Omar died in a hospital in Karachi at that time.
September 28, 2015 - Taliban insurgents seize the main roundabout in the Afghan provincial capital of Kunduz, then free more than 500 inmates at the prison.
December 21, 2015 - A police official says Taliban forces have taken almost complete control over Sangin, a strategically important city in Afghanistan's Helmand province.
May 21, 2016 - Taliban leader Mullah Akhtar Mohammad Mansour is killed in an airstrike in Pakistan.
May 25, 2016 - The Taliban name Mawlawi Haibatullah Akhundzada as their new leader. He is a senior religious cleric from the Taliban's founding generation.
January 25, 2017 - The Taliban release an open letter to newly elected US President Donald Trump. The letter calls on Trump to withdraw US forces from Afghanistan.
April 21, 2017 - The Taliban attack a northern army base in Afghanistan, killing or wounding more than 100 people.
July 25, 2017 - CNN reports it has exclusive videos that suggest the Taliban have received improved weaponry in Afghanistan that appears to have been supplied by the Russian government. Moscow categorically denies arming the Taliban.
August 3, 2017 - Taliban and ISIS forces launch a joint attack on a village in northern Afghanistan, killing 50 people, including women and children, local officials say.
January 27, 2018 - An attacker driving an ambulance packed with explosives detonates them in Kabul, killing 95 people and injuring 191 others, Afghan officials say. The Taliban claim responsibility.
February 28, 2018 - Afghan President Ashraf Ghani says the government is willing to recognize the Taliban as a legitimate political party as part of a potential ceasefire agreement.
April 12, 2018 - At least 14 people, including a district governor, are killed and at least five are injured in a Taliban attack in Afghanistan's southeastern Ghazni province.
June 7, 2018 - In a video message, Ghani announces that Afghan forces have agreed to a ceasefire with the Taliban between June 12 and June 21. The proposed truce coincides with the holiday of Eid al-Fitr, the period during which Muslims celebrate the end of Ramadan, the Islamic holy month of fasting.
June 15-17, 2018 - The three-day-old ceasefire between the Taliban, Afghan forces and the NATO-led coalition is marred by two deadly attacks. ISIS, which did not participate in the truce, claims responsibility for a suicide bombing in the Nangarhar province that kills at least 25 people, including Taliban members and civilians. A second suicide bombing is carried out near the Nangarhar governor's compound, killing at least 18 people and injuring at least 49. There is no immediate claim of responsibility for the second attack.
August 10, 2018 - The Taliban launch an attack on the strategic Afghan city of Ghazni, south of the capital Kabul, seizing key buildings and trading fire with security forces. At least 16 people are killed and 40 are injured, most are Afghan security forces.
October 13, 2018 - The Taliban issues a statement announcing that the group met with the US envoy for Afghanistan, Zalmay Khalilzad, to discuss the conflict in Afghanistan. The United States does not confirm that the meeting occurred.
November 9, 2018 - In Moscow, Taliban representatives participate in talks with diplomats from Russia, Pakistan, India and other countries, as well as officials from the Afghan government. The United States sends a diplomat from its embassy in Moscow as an observer.
January 22, 2019 - Authorities say at least 12 members of the Afghan military were killed and another 28 injured when the Taliban carried out a suicide attack on a military base in the central province of Maidan Wardak.
January 28, 2019 - Officials from the United States and the Taliban announce they have agreed to a framework that could end the war in Afghanistan. The framework for peace would see the Taliban vow to prevent the country from being used as a hub for terrorism in return for a US military withdrawal. An Afghan source close to the negotiations tells CNN that while a ceasefire and US withdrawal were both discussed, neither side came to final conclusions.
January 30, 2019 - In its quarterly report to the US Congress, the Special Inspector General for Afghan Reconstruction declares the Taliban expanded its control of territory in 2018 while the Afghan government lost control of territory. In October 2018, the Afghan government controlled just 53.8% of districts in the country, according to the report. The insurgency made gains to control 12.3% of districts while 33.9% of districts were contested.
February 5-6, 2019 - Talks are held in Moscow between Taliban leaders and politicians from the government of Afghanistan.
March 12, 2019 - Peace talks between representatives from the United States and the Taliban end without a finalized agreement. Khalilzad, the main American negotiator, says that progress has been made and the talks yielded two draft proposals.
September 7-8, 2019 - Trump announces that Taliban leaders were to travel to the Unites States for secret peace talks over the weekend but that the meeting has been canceled and he has called off peace talks with the militant group entirely. Trump tweets that he scrapped the meeting after the Taliban took credit for an attack in Kabul, Afghanistan, that killed a dozen people, including an American soldier.
November 28, 2019 - On a surprise trip to Afghanistan for a Thanksgiving visit with US troops, Trump announces that peace talks with the Taliban have restarted.
February 29, 2020 - The United States and the Taliban sign a historic agreement which sets into motion the potential of a full withdrawal of US troops from Afghanistan. The "Agreement for Bringing Peace to Afghanistan" outlines a series of commitments from the United States and the Taliban related to troop levels, counterterrorism and the intra-Afghan dialogue aimed at bringing about "a permanent and comprehensive ceasefire."
August 9, 2020 - Afghanistan's grand assembly of elders, the consultative Loya Jirga, passes a resolution calling for the release of the last group of some 5,000 Taliban prisoners, paving the way for direct peace talks with the insurgent group. The release of the 400 prisoners is part of the agreement signed by the US and the Taliban in February.
April 14, 2021 - US President Joe Biden formally announces his decision to withdraw US troops from Afghanistan before September 11, 2021, deeming the prolonged and intractable conflict in Afghanistan no longer aligns with American priorities.
August 15, 2021 - After the Taliban seize control of every major city across Afghanistan, in just two weeks, they take control of the presidential palace in Kabul. A senior Afghan official and a senior diplomatic source tell CNN that Ghani has left the country.
August 30, 2021 - The last US military planes leave Afghanistan.
September 7, 2021 - The Taliban announce the formation of a hardline interim government for Afghanistan. Four men receiving senior positions in the government had previously been detained by the United States at Guantánamo Bay, and were released as part of a prisoner swap for Bergdahl in 2014.
November 30, 2021 - New research released by Human Rights Watch (HRW) details "the summary execution or enforced disappearance" of 47 former members of the Afghan National Security Forces who had surrendered or were apprehended by Taliban forces between August 15 and October 31. A Taliban deputy spokesman rejects the HRW report, saying that the Taliban established a general amnesty on their first day of power in Afghanistan.
December 27, 2021 - The Taliban says it has dissolved Afghanistan's election commission as well as its ministries for peace and parliamentary affairs, further eroding state institutions set up by the country's previous Western-backed governments.
February 11, 2022 - Biden signs an executive order allowing $7 billion in frozen assets from Afghanistan's central bank to eventually be distributed inside the country and to potentially fund litigation brought by families of victims of the September 11 terror attacks. The Taliban has claimed rights to the funds, which include assets like currency and gold, but the United States has declined access to them after Afghanistan's democratic government fell. The United States has not recognized the Taliban as the government of Afghanistan.
March 23, 2022 - The Taliban prevents girls above the 6th grade in Afghanistan from making their much-anticipated return to school. They are told to stay at home until a school uniform appropriate to Sharia and Afghan customs and culture can be designed, the Taliban-run Bakhtar News Agency reported. The Taliban originally said that schools would open for all students -- including girls -- after the Afghan new year, which is celebrated on March 21, on the condition that boys and girls were separated either in different schools or by different learning hours.
November 13, 2022 - The Taliban orders judges in Afghanistan to fully impose their interpretation of Sharia Law, including potential public executions, amputations and flogging, a move experts fear will lead to a further deterioration of human rights in the impoverished country.
December 20, 2022 - The Taliban government suspends university education for all female students in Afghanistan.
December 24, 2022 - The Taliban administration orders all local and international non-governmental organizations (NGOs) to stop their female employees from coming to work, according to a letter by the Ministry of Economy sent to all licensed NGOs.
June 15, 2023 - The United Nations releases a report saying that since re-taking control of the country,the Taliban has committed "egregious systematic violations of women's rights," by restricting their access to education and employment and their ability to move freely in society.