
First Read: Iran attempted to develop a “fourth-generation” nuclear warhead, technology long deemed impossible. Israeli intelligence picked up troubling signs during the war- signals not tied to uranium enrichment, and not to a classic bomb. Something stranger, more ambitious: the exploration of a pure-fusion nuclear weapon, an idea no country has ever managed to make work. Read the full story here- and subscribe to my new newsletter. open.substack.com/pub/nadave/p/f…






















