we'll check in with former prime minister nabil shaath. we'll get his reaction to what we just heard. meanwhile, there have been angry protests that broke out today on the west bank. palestinian leaders called for a day of rage in response to the deadly shelling of that united nations school in gaza. there are also violent protests. at least four palestinians have been killed. cnn's karl penhaul is joining us from gaza city. do we know more about what happened that the u.n. school? you were there overnight. because there have been so many casualties. >> so many casualties, so many different versions of events of what went on, wolf. the united nations has promised they won't let this incident disappear in the fog of war. this afternoon, the first u.n. team headed to the school there in northeast gaza to try and gather some preliminary details. they said they were on the ground a very short time because despite, in their words, having informed the israeli military of their intentions to carry out that investigation, the area is still in a co

i heard also nabil shaath. i would say he's shedding crocodile tears.defense. it's like saying an armed robber who comes to your home and threatens to kill your family, you know, he's using the gun as self-defense. no. you have to take care of him. hamas is committing a double crime here. >> should israel accept a cease-fire, even if those tunnels aren't completely destroyed, even if hamas still has rocket launchers capable of firing rockets and missiles into israel? should israel accept a cease-fire in place and withdraw all of its ground forces in gaza? >> israel has accepted three times a cease-fire. >> it's a new situation now. >> the short answer is yes. i would say, you know, if i were to be in the decisionmaking process in jerusalem, i would say yes, but one condition, that after the cease-fire, we demilitarize gaza. we take away, just like we did in the international community in syria, taking away all the chemical arsenal of assad. we have to take all the rockets and blow up all the tunnelings in gaza. in this situation, i would say cease-fire

. >> joining us now from ramallah, the west bank, the senior palestinian adviser nabil shaath.hanks very much for joining us. did hamas make a major blunder in rejecting that egyptian proposed cease-fire? >> well, we think hamas should have accepted. we want to get a stop to the spilling of blood and the horrible tragic war being waged on gaza. now, hamas has questions about the unwillingness of israel to fulfill any of the obligations made in the agreements that they made in 2012 and 2008. gaza is still fully under siege. and none of the agreements that have been signed before have been implemented. but we think this is something that can be discussed later. what we should do now is proceed to an immediate stop of the israeli attack on gaza and, therefore, an immediate cease-fire. and we are working very hard to make that happen as soon as possible. >> i know that president mahmoud abbas, president of the palestinian authority, he's meeting with egyptian leaders, including the egyptian president al s el sissy right now. are hamas involved in the discussions in cairo, as far as

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