I agree with all of this except for the land grab part.Does anybody think the Palestinians including Hamas are suicidal? They would have to be knowing they could never defeat Israel militarily. So why did they launch this attack? The answer is simple, desperate people do desperate things and the Palestinians locked by Israel in an open air prison called Gaza truly are. There's an old saying "you can kick a dog around for so long and he'll get tired, he'll turn". Metaphorically the Palestinians are that dog and apparently would rather die than continue to live under Israel's never ending oppression. Israel must stop its land grab and allow the Palestinians their own autonomous state with contiguous borders and end this madness.
Outside that, yea, the frustration from Palestinians is well known and empathized with.