The structural reason attribution stays murky is itself worth naming because the „Islamic Resistance in Iraq“ is not a single group but an umbrella of interchangeable front names, staffed largely by Kataib Hezbollah personnel, under which the harder-line factions operate. Attacks surface under disposable labels while the parent organizations issue denials, distributing deniability by design. In that framework, the absence of a claim is not evidence of an outside hand; it is the system working as intended.
Which leaves open a possibility that neither the proxy-signal nor the internal-defiance reading captures: that the strikes serve simply to manufacture instability in a region whose neutrality makes it a soft and symbolically useful target. When drones are intercepted over the cities, their debris cleared and their intended target never confirmed, even the object of the attack becomes a matter of inference.