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.
In this case the residents only had 57 seconds to get out of the way before the house was destroyed.
Against the Grain 
In fact, residents are called on the phone by the IDF 10 to 15 minutes before the non-lethal guided missile (not a mortar, which is unguided and inaccurate – that’s what Hamas uses), providing ample warning time to leave the house (but hopefully not enough to remove the weapons stored below it).
The link below shows that news agencies have sufficient time to set up their camera’s in front of a building about to be attacked. It also shows the video’s to be edited before made public (smoke from the warning missile clears off from one frame to the other). Time is cut out of the video, to create the impression the actual strike occurs faster than in reality.
http://www.independent.co.uk/news/world/middle-east/israelgaza-conflict-israeli-knock-on-roof-missile-warning-technique-revealed-in-stunning-video-9603179.html
Interesting. So you think a phone call or a text message justifies the war crime of destroying a civilian home? A pity the Palestinian freedom fighters don’t have the same capability, but have to rely on primitive unguided rockets.
And the ‘knock on the roof’ is NOT a warning! It is a pathetic attempt to put a touchy, feely humanitarian spin on firing a round for marking, so that the IDF doesn’t waste their $150,000 GPS-guided, 155mm Howitzer missile on the wrong building!
It is also a terror tactic. If some of the occupants survive, they will tell the tale and spread the fear.
And thanks for the link. It also states:
The so-called “knock on the roof” technique has been condemned by Amnesty International’s Philip Luther, who said: “There is no way that firing a missile at a civilian home can constitute an effective ‘warning’.
The Jewish Nazis don’t even shy away from targeting hospitals, police stations and mosques as you can see in this video. That’s not only a war crime but a crime against humanity!
I was not referring to whether it was or was not justifiable, just pointing to the inaccuracies in the reporting. As I said, Israel does not use mortars but precision guided non-lethal ammunition as a warning, in addition to phone calls. So inhabitants do have sufficient time to evacuate the house, which often doubles as an ammunition storage facility or a launch installation. If we can agree on these facts, we can have a meaningful discussion of their consequences.
In the meantime, I suggest not invoking anything produced by Russia Today as evidence. This channel is sponsored by the Russian government and is not an independent non-biased source.
Also, I suggest you look up Godwin’s law – http://en.wikipedia.org/wiki/Godwin%27s_law
Now you’re trolling again. Do you really think Palestinians are concerned about whether they’re being killed or their homes destroyed by a mortar, a guided missile or even some banned weapons?
If you want to have a meaningful discussion you should start to think about whether this operation is justifiable by any means and not the other way around. Also I happen to think that RT is quite a reliable source – at least compared to most of the western corporate media.
And I’m well aware of Godwin’s Law, thanks. When Israeli politicians like Netanyahu, Lieberman, Ayelet Shaked and others use perverted terms like “subhumans”, “animals”, “go all the way”, “little snakes”, “slaughter all Palestinian mothers”, etc, then I think it’s quite appropriate to liken them to Nazis. After all, the purpose of this operation, like many others, clearly is to kill as many Arabs as possible. As we all know, the Israelis need more ‘Lebensraum’ – just like the Nazis did.
Again, if we can’t agree on the facts, we can’t move on. I think you avoid discussing the deliberately inaccurate representation of the events, choosing instead to claim high moral ground. But denying the facts only takes the solution further away. Hamas and Gaza live in a dream world, in which they are righteous and victorious. When they wake up from that dream and realize they have created their own nightmare, they can start rebuilding their lives. Unfortunately, I think you’re not helping them.
Trolling is defined as disrupting normal on-topic discussion or diverting it away from its intended topic. That’s exactly what you’re doing, but I don’t expect you to understand that. That’s also the reason why ‘we can’t move on.’ Find another place to go trolling, because I’m not going to waste any more time on you.