The months-long manhunt for French-born Rachid Kassim ended one chilly morning early this year when a drone-launched missile destroyed his battered white pickup truck as it motored through the besieged Iraqi city of Mosul.
The 29-year-old former rapper had cast a grim shadow in international counter-terrorism circles. He spoke fluent French, once beheaded a man in an online video and played a role in a string of terrorist plots — two successful — in France last year.
The Feb. 8 drone strike notched a victory for a U.S.-led effort that seeks to silence Islamic State operatives who use social media, encrypted messaging and other online tools to reach disaffected Muslims overseas and to launch what counter-terrorism experts now call “remote-controlled” attacks.
As Islamic State steadily loses ground in Iraq and Syria, its ability to sponsor and inspire headline-grabbing attacks abroad looms larger than ever — providing the militants the appearance of lethal viability despite the caliphate’s collapsing borders.
In recent weeks, Islamic State has claimed responsibility for killing a policeman on the Champs-Elysees in Paris, for the Palm Sunday bombings of two churches in Egypt, for an attack by gunmen disguised as medical staff that left 38 dead at a hospital in Kabul, Afghanistan, and for a suicide bombing that killed 88 people at a Sufi shrine in southern Pakistan.