September 11 and the UK response

On 11 September 2001, four aircraft on internal flights within the United States were seized by passengers who crashed two of them into the World Trade Centre in New York and another into the Pentagon, Washington DC, the other falling into open land in Pennsylvania. The men who seized the planes were all non-US nationals. The total loss of life was over 3,000, including a number of UK citizens. The economic consequences were hardly calculable. Responsibility for the attacks was attributed to the Al Qaeda movement, a group regarded by the United States as being responsible for previous attacks against US targets, including the bombing of American embassies in East Africa in 1998 and on the USS Cole in Yemen in 2000. Although Al Qaeda was thought to have members in many states, the principal base for its operations was in Afghanistan.