"The Arms of the Future: Technology and Close Combat in the Twenty-First Century" somehow i feel that the Pentagon leadership didn't read that book before starting the Iran affair.
Which leadership are we talking? The US military has been clear enough that they thought an Iran invasion was infeasible for obvious reasons - it isn't like what actually happened surprised many people, the US never looked like it could take on Iran in a direct war on Iranian soil. It was so obvious not even the Bush administration tried, and the US was in a much stronger relative position back in the 2000s. If we're…
1) attack Iran, directly as well as in the neutral third country Lebanon;
2) Iran counterattacks, including at unrelated parties
3) US is forced to intervene on the Israeli/Gulf States side
This is also why any "deal" is of very questionable longevity unless it is meaningfully binding on Israel.
(Israel will claim, with some justification, that the October attacks were sponsored by Iran, as have a lot of the missiles against which Iron Dome was built)