Yalova’s quiet coastal calm masked a decade-long Islamic State presence enabled by legal impunity and permissive security policy

Far from being an accidental security failure, the group’s long-term presence appears to have been sustained by a permissive environment shaped by Turkey’s intelligence services, which treated jihadist networks as manageable assets rather than existential threats and, at times, leveraged their violence to advance the political objectives of the Islamist ruling Justice and Development Party (AKP), both domestically and in Turkey’s immediate neighborhood.

 Islamic State’s long-term presence appears to have been sustained by a permissive environment shaped by Turkey’s intelligence services.

That calculation collapsed violently in December 2025, when a police operation against a known ISIS cell in Yalova spiraled into a deadly confrontation. Three police officers were killed along with six ISIS militants, exposing the limits of Ankara’s ability to “manage” radical groups it had long tolerated and in some cases shielded and sponsored. The episode underscored how jihadist operatives, emboldened by years of legal impunity and political protection, ultimately demanded more than the Turkish state, even under President Recep Tayyip Erdogan’s Islamist government, could or would deliver.

Although the ISIS safe house and the militants holed up inside had long been known to Turkish authorities, the government dispatched a local police unit at around 2 a.m. to execute a search warrant without adequate equipment. Officers reportedly lacked body armor, night-vision goggles and armored personnel carriers. Special forces, normally deployed in high-risk counterterrorism operations before regular police execute warrants, were not called in.

The decision suggests that authorities did not anticipate armed resistance and that intelligence assessments failed to warn of a likely deadly confrontation. When police arrived at the house, ISIS militants immediately opened fire, pinning officers down in exposed positions, killing three and wounding others. Forensic examinations later revealed traces of gunpowder on some of the wives of the slain ISIS militants, suggesting that women may also have taken part in the firefight.