I believe Israel denied responsibility for the beach bombing. Wouldn't be the first time Arabs blew up their own either by mistake, duplicity, or poor aim.

Except for the IDF's whitewash of the incident, all of the evidence points to the IDF as the responsible party. And it wasn't just the civilians on the beach. It was also the civilians killed in the air raid on a civilian neighborhood, and the ongoing bombing in civilian areas of Gaza that Israel has been engaging in since its withdrawal from there. If it was just the one incidednt, you and the IDF might be believable, robomatic, but in the context of the many, many bombings of civilians by the IDF in Gaza, you (and they) just aren't.

Attacking Israelis on their own territory by a well planned and executed attack is an act of war.

And attacking Palestinians on their own territory by a well planned and executed attack is also an act of war. Unless you don't consider Palestinians to be human beings, in which case, you might just see it as the equivalent of squashing a bug. Clearly, that's how the government of Israel sees it.

The story that Fatah and Hamas have contrived an 'implicit' recognition of Israel (within pre-1967 borders) is leaning over so far backwards to find 'recognition' that you are facing your butt.

It was a step in the right direction. Obviously, the government of Israel thinks it's a step toward peace. If they didn't, they wouldn't be working so hard to stop it.