I just looked up Imia/Kardak. Their total size combined is is 10 acres (4.0 ha). Do the Turks really want to start an international incident over these two very small Islands?
Well the Turks see an obviously weak Greece. Maybe they think they can retake the islands without firing a shot. If they do retake the islands what will Greece do? The EU? Oh sure the EU will send troops from Denmark to support the deadbeat Greeks.
They don’t need a reason, but just shoot up the place and kill people for very slight or unknown reasons.