Those screen shots in the Telegram post you of what is supposed to be some Israeli document was also shown in the video in the tweet I linked to above. I'm not sure what the source is but definitely isn't in the book he mentioned nor in that "Handala hack" article that he posted a screencap of - also in that Twitter video.
This is the article he posted a screenshot of. There's no mention of any nukes:
A series of cyber attacks by pro-Palestine hacker group Handala have in recent months targeted key Israeli regime facilities, resulting in the leak of sensitive military and intelligence data.
www.presstv.ir
Even if there's something to theory about Israel firing nukes all over the world as a last option, nothing in the video embedded in the Tweet posted by this guy that actually proves the theory. The two sources he put into the video to give it a bit more credibility (the Samson Option book from that American Jewish author and the screencap of the article about Israel being hacked) don't mention anything about it. He was hoping that people will watch the video and think "well the video mentioned there's documents that was hacked from Israeli intelligence that supposedly has a list of cities to be nuked as a last resort (show screencaps of documents with some Hebrew on it) and then there was a screenshot of an article about Israeli intelligence hacked so this article must be talking about these documents were acquired from the hack" without actually looking for the article show and seeing for themselves that there's nothing about nukes in it.
Same with showing the cover of that Samson Option book. He knew most people wouldn't actually bother to find out what's in the book and just assume the book talks about secret Israeli plans to nuke the world.
This just illustrates what I was saying about these sort of accounts being engagement chasers that won't intellectual sloppiness get in the way of getting the clicks and giving people what they want to hear. Even if the whole theory about Israel planning to nuke the world was true, this guy isn't setting himself up as any sort of serious commentator by presenting his argument in the fashion he has with sources that don't actually support what he is saying.