The extermination was not entirely successful.

I don’t have detailed opinions on Israeli military strategy.

I don’t understand what you mean about “the authority that created the modern state of Israel” - try a complete sentence.

There is no genocide of Palestinians; if there were, opposing it would be a moral
imperative and not at all antisemitic.

Most Palestinians are ethnicially Arab, and therefore part of a Semitic people, but the word antisemitism refers specifically to a hatred of Jews.

I don’t understand your last question either.