Based on what I've read...its a automatic rule. Just takes one shot to change the status of a mosque to a target. They may pump everyone up with video display of Americans shooting at the Mosque...but its a simple rule with a simple result. I'm of the same belief for US facilities as well. Any fool that wants to hide behind their religion and use weapons offensively...gets what they deserve.
Really, really sucks that Israel can't operate from that same rule.