The context of this discussion is the idea that war could have been avoided if Israel had been willing to negotiate with Hamas over the hostages.
And, I never said that the war was either avoidable or that Israel was wrong to use force after Oct 7.
What I am saying is that the war could have ended years ago and that Israel has committed genocide. I'm also saying that the pretext that it was about "getting the hostages home" was false.
And with that context, yes there are things world leaders should have done to stop Israel from committing genocide.