This might be the start of an entire new era of war for Israel.
After they get control of the situation in their own country, they are probably going to strike back hard, especially due to the embarrassment that this was possible.
That, in turn, might generate a long war back and forth.
I was always amazed when people treated Hamas like anything but a terrorist organization. That's all it is, and ever will be. To actually come in and murder hundreds (or more?) of random citizens is disgusting.