What they are already doing is a good indicator of how they will treat any future action.
No, it's not.
Nothing the Palestinians have ever done is even vaguely similar to a nuclear attack killing hundreds of thousands of people.
Providing aid to the Gaza government today has no relation to the fallout from such an act.
(Which is, of course, why the scenario of a nuclear attack is such a fantastic piece of mental gymnastics.)
Muslim radicals are aiding Hamas.
Now you're switching up again - first it was the governments of Egypt, Jordan and Saudi Arabia - now you're arguing "Muslim radicals." Obviously Jordan and Egypt aren't governed by radicals, and Saudi Arabia is confined by its relationship with the US.
You have a heckuva time sticking to one line of reasoning, don't you?
Muslim radicals are aiding Hamas. This is obvious. Hamas has the sworn purpose of annhilating Israel off the map.
Ah, but you're making a leap in logic there - that anyone who offers support to the Gaza government is "supporting the annihilation of Israel." There's no reason to make that leap.