Palestina: Israel Mortar Hitting Roof of Gaza Building To Warn of imminent Israeli Strike

Prior to striking a building in the Gaza Strip, the IDF warns its inhabitants using a procedure called "Knock on the roof," in which forces fire a small mortar at the target to indicate the imminent attack and signal those inside to flee before hitting it with full force.

The The video, posted On July 11, 2014 on Palestinian news site Al-Watan.