Finally we have a term for what you are saying in your post, and it is "fake news."

I don't believe Israel's Muslim neighbours are committed to its destruction. Show me what makes you say they are.

If you are thinking about the "right to exist" thing, well, nations do not exist by right. For example, Canada has no right to exist. We exist by negotiation, by the ability to establish ourselves in a place. We exist as a nation because we have learned to conduct ourselves in a way that threatens no one and benefits many other nations. We exist as a nation because it is in mot people's interest that we do.