but this attack like inviting grim reaper to your home. Civilians will pay dearly. Frankly, Palestinians are really pitiful. The world basically stop caring about them, and Israel has free out of jail cards to do anything it want today.
I suspected Hamas did this attack to sabotage the Saudi-Israel negotiation to establish diplomatic relationship. By attacking Israel, Hamas knew it would invite horrible retaliation, and when the Arabs see that retaliations, it would be difficult for Saudi gov to explain to its people about establishing relationship with Israel. But the cost for this strategy is really bloody huge.
At this point, I think it is better for Palestinians to emulate Gandhi's non violent protest. Israel is simply too far ahead in term of every thing.