Not true. They gave up advancing their nuclear weapons program, for now. And have received a miniscule lifting of sanctions for doing so.
They are still advancing, just at a slower rate. I promise you that they are still advancing it. Minuscule.....minuscule..?
Billions upon billions of dollars to slow thier advancement. Not to stop or reverse it, only to slow it. BTW, we were told that they were stopping it......nope, just slowing it.