I think you may have forgotten some of the context when you responded. We already have a consensus among experts that IQ isn’t intelligence. That’s not up for debate anymore. The question is whether or not intelligence can be measured, and the semantic question of defining intelligence is very important here. You can’t answer “how do we measure X?” without first defining what “X” is.
One of the biggest challenges when creating something new is in not knowing whether or not it’s possible. Once you know, you can just keep pouring resources into it and know with near certainty that you’ll eventually hit your goal. Since the US already has so many other tools for avoiding a nuclear strike, there’s no reason to publicise a new one. Keep it for when the other tools fail, or else everyone else will also have it and you lose your advantage before you could use it.