War in Afghanistan: The UN Security Council unanimously establishes an arms embargo and the freezing of assets of Osama bin Laden, al-Qaeda, and the remaining members of the Taliban.

The war in Afghanistan was a prolonged armed conflict lasting from 2001 to 2021. It began with an invasion by a United States–led coalition under the name Operation Enduring Freedom in response to the September 11 attacks carried out by the Taliban-allied and Afghanistan-based al-Qaeda. The Taliban were expelled from major population centers by US-led forces supporting the anti-Taliban Northern Alliance, thus toppling the Taliban-ruled Islamic Emirate. Three years later the US-sponsored Islamic Republic was established, but by then the Taliban, led by founder Mullah Omar, had reorganized and begun an insurgency against the Afghan government and coalition forces. The conflict ended decades later as the 2021 Taliban offensive reestablished the Islamic Emirate. It was the longest war in United States military history, surpassing the Vietnam War by six months.

The United Nations Security Council (UNSC) is one of the six principal organs of the United Nations (UN) and is charged with ensuring international peace and security, recommending the admission of new UN members to the General Assembly, and approving any changes to the UN Charter. Its powers as outlined in the United Nations Charter include establishing peacekeeping operations, enacting international sanctions, and authorizing military action. The UNSC is the only UN body with authority to issue resolutions that are binding on member states.

Osama bin Laden was a militant leader who was the founder and first general emir of al-Qaeda. Ideologically a pan-Islamist, Bin Laden participated in the Afghan mujahideen against the Soviet Union, and supported the Bosnian mujahideen during the Yugoslav Wars. Opposed to American foreign policy in the Middle East, Bin Laden declared war on the United States in 1996 and advocated attacks targeting U.S. assets in various countries, and supervised the execution of the September 11 attacks inside the U.S. in 2001.