Eventually. The only ones we had (Fat Man and Little Boy) were prototypes, it isn't like we had a production line set up. We didn’t even know if they’d work. I can’t find production rates, but I think it’s safe to assume it would have taken months at least to produce another bomb, and weeks to ship it to Okinawa.

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“Nations have no permanent friends or allies, they only have permanent interests.” - Lord Palmerston