The European Union (EU) Terrorism Situation and Trend Report (TE-SAT) 2010 is Europol’s first major public awareness product under our new legal framework. On 1 January 2010 Europol became an EU agency, acquiring a broader mandate and an enhanced capability to fulfi l its mission of supporting its Member States. The TE-SAT aims to provide law enforcement offi – cials, policymakers and the general public with facts and figures regarding terrorism in the EU, while also seeking to identify trends in the development of this phenomenon. It is a public document produced annually on the basis of information provided and verifi ed by the competent law enforcement authorities in the EU Member States., Terrorism continues to impact on the lives of Member States’ citizens both inside and outside the EU. In 2009, seven people (five police officers and two soldiers) were killed and scores of individuals injured as a result of terrorist attacks in Greece, Northern Ireland and Spain. In some cases it is difficult to differentiate between criminality and acts of terrorism or extremism. Terrorism is not an ideology but a set of criminal tactics which deny fundamental principles of democratic societies. EU Member States have agreed to regard terrorist acts as those which aim to intimidate populations, compel states to comply with the perpetrators’ demands, and/or destabilise or destroy the fundamental political, constitutional, economic or social structures of a country or an international organisation. The TE-SAT respects the classifications made by the EU Member States., In 2009, the total number of terrorist attacks and terrorism-related arrests in the EU continued to decrease. This is a welcome development which, however, must not be understood as an invitation to lower the guard. Islamist terrorists inside and outside the EU continue to aim for indiscriminate mass casualties. Separatist terrorists killed more people in the EU in 2009 than in 2008. Left-wing and anarchist terrorism is increasing in the EU. Extremists, in particular animal rights extremists, have used methods similar to those of terrorists. Thus, the threat from terrorism persists in the European Union.