In the history of warfare, this kind of systematic warning—direct, specific, double-layered—is unprecedented. It lets the enemy military officer escape in order to avoid killing his family. But how strictly is the IDF adhering to this policy? In some cases, there’s video evidence of targets being warned or knocked. In other cases, Gazans have confirmed that they received calls or warning flares. But the IDF’s performance seems inconsistent. In one incident, residents say that there was no phone call and that the strike, which killed six people, came only four minutes after the knock. In another case, a video shows just one minute between the knock and the strike. In two of the worst mass-death incidents, one in Khan Yunis and the other in Rafah, residents say there were no warnings. - www.slate.com