Israel is not a colonial power. The British split the land between Muslims and Jews.
The only problem is that some pushing for Arab nationalism couldn't stomach the existence of Israel or Jews in general. The land Israel was founded wasn't prosperous at all, on the contrary. Many years of cultivation made it the place it is today. I don't know what partition you reference as unfair here.
And that is true to today. If you look at the education of kids, you know who really has genocidal ambitions in this region and it isn't Israel.
> this supposedly entirely unprovoked and one-sided "attack"
Israel has the right to fight until the hostages are released.
The real "catastrophe" is the leadership of Palestinians, its teacher keeping the hatred against Jews alive. These are the perpetrators of the current conflict. Israels part is that itself has a problem with rising extremism. In this case it is a reaction to decades of conflict and hatred. That is no excuse but the same is doubly true for those that want to expel the Jews again and take their people hostage.