I can answer your questions partially.Two Questions from any one who knows the answer:
1- If Biden wants to go back to JCPOA...what happens to extra Uranium and Centrifuges that Iran has produced..what happens to financial damages to Iran in the past three years..
2- What happens in 5 years when JCPOA ends...Can US dump all nuclear sanctions on Iran again and Iran goes back enriching 20% and above..and we go on and on and on...
1. Modern centrifuges must be inactivated and set aside, replaced by old models (IR-1 I think). But working on technology to produce new centrifuges is allowed. Nuclear related sanctioned should be removed if US and Europe abide by rules, which they didn't and dont!
The financial damages and terror attacks against our scientists will be the topic of talks with the enemy, and Iran will use it as leverage. However with cucks such as Rouhani it's difficult to pressure the enemy. We need IRGC in power.
2. Jcpoa ends in 5 years but a number of restrictions remain till 2030. Then in a fair world Iran would only follow NPT rules, being allowed to enrich up to 90% for peaceful goals, without getting sanctioned.