Israel’s ‘Scorpius’ is not a rumor. How good it is might be the rumor.
I have been sparing in my mention of it because no one believes it. But it is real, and they might use it.
Israel could send Iran ‘back to the stone age’ with electromagnetic bomb https://www.timesofisrael.com/israel-could-destroy-irans-electric-network/
They announced it in 2012. It probably was a concept then, so they have had 12 years to work on it. if they have it, they will use it at a time of their choosing. It is considered a last resort weapon, but one that will eliminate Iran’s nuclear program in a few seconds. They have battle tested scorpius and it currently is in mass production.