Why did the US bomb Iran now

*If Iran’s nuclear program was not an imminent threat, what motived the US-Israeli attack? Why now? The answer is political opportunity.*

Specifically, the opportunity to try to curtail Iran's refusal to comply with the US's foreign policy.

That refusal does not imply that Iran stands for good. Its main policy goal is religious fanaticism, resembling the fanatical current US regime and opposed to it only in that they support two different religions.