I presently believe that what Hamas did to start all this was to completely sacrifice Gaza in order to end Israel

 Hamas has fully demonstrated that they don't give a damn about anyone living in Gaza including themselves. They only want to end Israel and to start  Armageddon  through World war III and that's all.

What a completely miserable point of view. However, I presently think this is what actually is and has happened in real life. What a horror for the world!