because that's how they do things. Terrorist organizations ("elected" or not) don't usually contain themselves to just their evil bases and well defined areas.

because that's how they do things. Terrorist organizations ("elected" or not) don't usually contain themselves to just their evil bases and well defined areas. Given that Israel believes this is a legitimate target against Hammas (whether it contains intelligence, weapon caches or weapon manufacturing), the target itself are not the people occupying it. That's why, in order to minimize casualties while still operating a war effort, they notify and allow ample time to evacuate the building APs vague "we were notified" and "narrowly evacuated" is an exaggeration, they were notified by the Israelis themselves and given time to evacuate (that's why they don't mention any casualties in that story, since they probably don't exist). You could argue that no (primarily or not) civilian targets should be attacked ever but that's another subject