Thermo Nuclear Warheads

We don't know the kind of thermo nuclear warheads we have in our arsenal. The w 76 war head has a blast eeld of a hundred killotons. Thar is massive. There is not a small, low yield tactical warhead. Next question shrin says, is it possible in india to see private defence companies, including arendy, like super giants, locked marty in general atomics within eight to ten years?