Two decades have now passed since Al-Qaeda militants targeted the United States mainland on 11 September 2001. Since the attacks, the fight against transnational militant Islamism has dominated security agendas in the US, Europe, and beyond, costing the US alone over USD 5.4 trillion and claiming the lives of more than 7,000 US military personnel globally. Despite these costs, the threat from militant Islamism has persisted β and indeed proliferated β since September 2001. At this 20-year mark, Janes Terrorism & Insurgency Centre (JTIC) data offers insights on past trends and future forecasts for transnational militant Islamist activity.
Operational trends
Al-Qaeda and the Islamic State represent the most active transnational militant Islamist groups since 2001. According to JTIC data, these groups and their affiliates conducted at least 27,258 attacks between 2009 and 2020, resulting in over 61,124 non-militant fatalities. These attacks have largely targeted conflict theatres in the Middle East β with more than two-thirds of attacks taking place in Syria and Iraq β as well as in East Africa and West Africa. Transnational Islamist violence has targeted security forces in over half of all attacks, and militants have demonstrated a tactical preference for close-quarters engagement between forces on open ground and stand-off/area attacks involving explosives or indirect fire attacks.
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