If no inspectors are allowed into Iran, then we’ll just have to take their word for it.
The JCPOA tripled inspectors in Iran, and put cameras in lots of places - like their uranium mines - for 25 years. It was excellent in verification.
This deal is the least-worst option right now, so it’s the right thing to do.
But it is awful. And we have no choice - the mullahs have us (and the world economy) by the balls.