September 11, 2001

September 11, 2001
Flickr user Michael Foran · CC BY 2.0 · source
Title	September 11, 2001
Date	September 11, 2001
Location	New York City, Arlington County, Shanksville
Type	Coordinated terrorist hijackings, suicide attacks, mass murder
Fatalities	2,977 (approx.)
Perpetrators	al-Qaeda
Motive	Anti-Western jihadism, Salafi jihadism

September 11, 2001 was a series of four coordinated al-Qaeda-directed aircraft hijackings and suicide attacks targeting symbols in the United States: the World Trade Center in New York City, the Pentagon in Arlington, and an intended target thought to be the United States Capitol or the White House in Washington, D.C.. The attacks involved operatives linked to Osama bin Laden, were prosecuted in the context of global War on Terror, and precipitated major policy shifts including the USA PATRIOT Act, the invasions of Afghanistan and later Iraq, and long-term changes to aviation security and international counterterrorism cooperation.

Background

The plot drew from networks built by al-Qaeda leaders such as Osama bin Laden, Khalid Sheikh Mohammed, and affiliates including Hambali and Ayman al-Zawahiri, with operational planning traced to Kuwait, Afghanistan, Pakistan, and Germany through cells linked to Hambali and Fazul Abdullah Mohammed. U.S. intelligence agencies such as the Federal Bureau of Investigation, the Central Intelligence Agency, and the National Security Agency had prior warnings related to al-Qaeda activities and the 1998 United States embassy bombings and the USS Cole bombing, while diplomatic relations involving Saudi Arabia, United Arab Emirates, and Egypt intersected with migration, flight training at schools like those in Florida, and visas processed by the United States Department of State. Post-Cold War geopolitics, including the aftermath of the Soviet–Afghan War and the rise of Taliban, provided training grounds and sanctuary implicated in the plot.

Attacks

On the morning of the attacks, four commercial airliners—American Airlines Flight 11, United Airlines Flight 175, American Airlines Flight 77, and United Airlines Flight 93—were commandeered by hijackers who crashed two into the north and south towers of the World Trade Center complex in Lower Manhattan, struck the Pentagon in Arlington, and crashed into a field near Shanksville after passengers attempted to retake control. Live global broadcasts from networks like CNN, Fox News Channel, BBC News, and Al Jazeera covered the collapses, while officials from the White House, United States Congress, Mayor Rudy Giuliani, and the Port Authority of New York and New Jersey coordinated initial statements. Airline responses involved carriers like American Airlines and United Airlines and regulators including the Federal Aviation Administration.

Immediate response and emergency services

Emergency operations involved first responders from the New York City Fire Department, the New York City Police Department, the Port Authority Police Department of New York and New Jersey, Metropolitan Police Department (DC), and volunteer teams, alongside federal agencies such as the Federal Emergency Management Agency and the Department of Defense. Hospitals like NewYork–Presbyterian Hospital and Bellevue Hospital Center received mass casualties, while coordination included the National Guard and assets from United States Northern Command and Joint Task Force elements. Communications involved emergency dispatch systems, emergency operations centers of New York State, and mutual aid agreements with neighboring jurisdictions including New Jersey and Connecticut.

Casualties and damage

The attacks resulted in the deaths of nearly 2,977 victims including occupants of the aircraft, workers in the World Trade Center complex, first responders from the FDNY and NYPD, and civilians at the Pentagon; thousands more were injured and many suffered chronic illnesses linked to dust and combustion products. The collapse of the towers destroyed the World Trade Center's Twin Towers, caused structural damage to surrounding skyscrapers including 7 World Trade Center, and damaged infrastructure including PATH tunnels and Brookfield Place; economic impacts affected financial institutions such as the New York Stock Exchange and firms housed in the World Financial Center. Environmental and health consequences prompted studies by entities like the Environmental Protection Agency and the Centers for Disease Control and Prevention, while missing persons investigations involved the New York City Office of Chief Medical Examiner.

Investigations and legal actions

Investigations were led by the Federal Bureau of Investigation's inquiry into terrorism and coordinated with international law enforcement including Interpol; intelligence reviews produced the 9/11 Commission (formally the National Commission on Terrorist Attacks Upon the United States) chaired by Thomas Kean with vice-chair Lee H. Hamilton, producing the 9/11 Commission Report. Legal actions included criminal prosecutions linked to al-Qaeda, civil lawsuits against foreign entities and airlines, and discussions of detainee policy that involved legal venues such as Guantanamo Bay detention camp and debates in the United States Supreme Court over habeas corpus and the Military Commissions Act. Congressional hearings involved members of the United States House of Representatives and United States Senate and produced legislation like the Homeland Security Act of 2002 establishing the United States Department of Homeland Security.

Domestic and international impact

Domestically, the attacks reshaped U.S. policy with the launch of the invasion of Afghanistan targeting Taliban governance and al-Qaeda safe havens, and spurred the creation of agencies such as the Transportation Security Administration and policy initiatives including the USA PATRIOT Act. Internationally, NATO invoked Article 5 for the first time, leading to allied deployments from countries including United Kingdom, Canada, Australia, and Germany to operations in Afghanistan; bilateral relations with states such as Pakistan and Saudi Arabia were affected, and global counterterrorism cooperation expanded through forums like the United Nations and G8. The attacks influenced debates over surveillance overseen by the National Security Agency and led to prolonged conflicts including the Iraq War with political ramifications for leaders such as George W. Bush and global figures like Tony Blair.

Commemoration and cultural legacy

Commemorations include the National September 11 Memorial & Museum at World Trade Center site, annual remembrance ceremonies attended by U.S. presidents including George W. Bush, Barack Obama, and Donald Trump, and memorials in municipalities such as Shanksville and Arlington National Cemetery. Cultural responses encompassed works by artists and authors including Don DeLillo, filmmakers such as Oliver Stone, musicians, theater pieces, and journalism in outlets like The New York Times, The Washington Post, and Time. The attacks influenced security and civil liberties discourse involving activists, legal scholars, and institutions like American Civil Liberties Union and prompted scholarly analysis in journals and universities including Harvard University and Columbia University.

Category:2001 Category:Attacks in the United States