jcpoa was only in effect from 2016-2018, thanks to our withdrawal. iran had been on the honor system for at least 7 years by this point, assuming the conversation happened in trump's current term.Yes, the JCPOA agreement had limited, temporary, and reversible constraints on Iran’s nuclear program—known as "sunset provisions—which could allow Iran to become a threshold nuclear state. The agreement also left out Iran's ballistic missile development and its support for regional proxies.