Have you ever actually tried to do a serious engineering project from scratch based only on what's in the published literature in any field without consulting somebody who had actually done it? It's actually really hard. The devil is always in the details,
Maybe you haven't noticed, but the Middle East is full of countries that have had WMD programs involving chemical and/or biological weapons, and even some nuclear programs. The expertise is out there.
The idea that they're on the brink of a devastating weapon that nobody in the DoD thought to prepare for during the Cold War when we had the entire Soviet weapons program working on it seems like a stretch.
The Cold War is long over and the resources assembled to be prepared to fight if it ever went hot started going away long ago, not unlike the heavy lift space rockets (Saturn V) built to go to the moon. Even the people that knew how to build some those things are retiring and dying. They have already had to try to recreate lost knowledge for materials in nuclear weapons. Knowledge and infrastructure a perishable, and that's assuming you aren't actively dismantling them. There are things we could do in the 1950s and 1960s that we can't today without recreating large industrial programs that would take years to put in place.
Being prepared to fight the Soviets 25 years ago doesn't necessarily buy us anything today.