Militant attacks caused fewer fatalities in 2017

· In Iraq, 2017 attacks fell by more than one-third and fatalities fell by almost two-thirds.

· Despite losing all territory in Iraq and Syria by November, the Islamic State remained the most active militant group worldwide. Attacks conducted increased slightly to more than 4,500, but fatalities fell by two-fifths to almost 6,500.

Islamic State ramps up attack frequency, but fatalities fall
For the fourth consecutive year, the Islamic State was the most operationally active militant group in terms of attacks, with a total of at least 4,612 attacks in 2017 resulting in 6,499 non-militant fatalities. These figures represented a slight 9 percent increase in attacks – but a more substantial 40 percent decrease in resultant fatalities. In proportional terms, Islamic State attacks in 2017 accounted for 21 percent of all attacks worldwide, an increase from 18 percent in 2016.

“The overall trend of Islamic State attacks slightly increasing and fatalities decreasing substantially was representative of the operational shift undertaken by the group across the year as a consequence of steady territorial losses - most notably the cities of Mosul and Raqqa - which continued until the final capture of all territory controlled in Iraq and Syria in early November,” Henman said. “As it came under growing territorial pressure, the Islamic State transitioned back to insurgent operations, conducting a higher tempo of low intensity violence against security forces and non-state adversaries in areas newly recaptured from the group.”

There also was a reduction in external operations by the Islamic State targeting Western nations, with no evidently centrally-directed and executed attack in 2017, such as Paris in November 2015 and Brussels in March 2016. However, there were multiple attacks for which the group claimed responsibility that were conducted by suspected supporters of the group. These included the 22 May suicide attack in the U.K. city of Manchester, killing 22; the 17 August vehicle-impact attack in Barcelona, Spain, killing 14; and two combined vehicle-impact and knife attacks in the UK capital London on 22 March and 3 June, killing a total of 13.

2018 outlook
As the Islamic State looks to regroup in Syria and Iraq and maintain its operational threat through a combination of low-level insurgent operations and periodic asymmetric mass-casualty attacks, the group will continue to exhort its supporters worldwide to continue to launch attacks in their home countries.

“This will particularly be the case in those states that participated in the US-led coalition against the group in Iraq and Syria, with the group utilizing a potent narrative of revenge for the territorial destruction of the group’s self-declared caliphate and for the civilians and fighters killed in its defense,” Henman said. “Operationally, it is likely that these attacks will continue to follow the same patterns as in 2016 and 2017, such as vehicle-impact and edged weapon attacks, although the use of homemade improvised explosive devices (IEDs) remains a strong if less likely possibility.”

The upcoming World Cup in Russia in June likely presents a particularly attractive target for the Islamic State, given Russia’s role in the group’s territorial defeat in addition to the participation of the Saudi and Iranian national teams.

“A successful attack would provide a tremendous propaganda boost for the Islamic State and its fighters and supporters, underlining the ongoing international threat posed by the group despite its territorial defeat,” Henman said. “While security will be extremely high across the course of the tournament, low-capability attacks by lone actors with no evident markers of radicalization remain extremely difficult to identify preemptively and there remains a substantial risk of an attack successfully being conducted.”