Of the 18,814 deaths caused by terrorists around the world last year, well over half were due to the actions of just four groups: Islamic State, the Taliban, Al-Shabaab and Boko Haram.
According to Global Terrorism Index 2018, compiled by the Institute for Economics & Peace (IEP), these four organisations were responsible for 10,632 deaths in 2017. Their actions contribute to the instability of what are some of the most dangerous countries in the world, including Afghanistan, Iraq, Nigeria, Somalia and Syria. Over the past decade they have accounted for 44% of all terrorist deaths
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