False flag attacks/murders aside, I rather doubt Israel would risk such an action without attempting to pin it on Hamas, Hezbollah or the Chinese (sarcasm). Looking into the motives, unless they are particularly Machiavellian (which of course is highly possible), a US Ambassador's murder is politically counter-productive. As to the assertion the Ambassador may have stumbled on "the truth", we already know what that is, so the death would have been superfluous.
All that aside, I fear the worst. Israel will continue to bomb, murder and starve an entire population. They will continue to perpetrate crimes against humanity, almost the very crimes of which they themselves have been victim, and good people will still protest to deaf ears as the genocide continues.
God, I hope I'm totally wrong.
Free Palestine.