This is a FOIA document that was published in 1963 from the CIA website. It states that weather is a weapon greater than nuclear.
https://www.cia.gov/readingroom/document/cia-rdp75-00001r000100070096-5
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A french TV about #HAARP in 2010
https://x.com/ZippoJeje/status/1853502464412225741
No translation available
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Some of the reasons it is greater than nuclear would be, it is COVERT. Most people dismiss the possibility so they don’t realize they have been attacked and therefore don’t retaliate. Also it can cover a much larger area. Even though nuclear can devastate a surrounding area, weather can affect a whole country and or region.