The EU Terrorism Situation and Trend Report (TE-SAT) was established in the aftermath of the 11 September 2001 attacks in the United States of America (US), as a reporting mechanism from the Terrorism Working Party (TWP) of the Council of the EU to the European Parliament. The content of the TE-SAT reports is based on information supplied by EU Member States, some third states (Colombia, Croatia, Iceland, Norway, Switzerland, Turkey, and the United States of America) and third organisations (Eurojust and Interpol), as well as information gained from open sources.