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Spate of violent attacks sparks fears of Islamic State revival

Updated Dec 16, 2025, 6:53am EST
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Mourners in Australia.
Flavio Brancaleone/Reuters

The father-and-son gunmen who killed 15 people on Sydney’s Bondi Beach had homemade Islamic State group flags and traveled to a Philippines region known as a hotspot for extremist groups.

IS is a shadow of its mid-2010s heyday, when it controlled much of Iraq and Syria, but remains a threat, The Telegraph reported.

Islamist attackers in Canada and the UK this year both pledged allegiance to IS, and there are signs that affiliated groups are exploiting a post-Assad vacuum in Syria: The organization claimed responsibility for the killing of two US soldiers and a civilian interpreter on Saturday. There is little overall coordination, but IS leadership can claim incidents like Bondi as a “block in the rebuilding of the caliphate.”

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