Iran nuclear deal (2015)
The US and five other world powers lifted sanctions on Iran in exchange for restrictions on its nuclear program. Sanctions relief was phased and tied to verification by the International Atomic Energy Agency.
Iran gained access to frozen assets and resumed oil exports. The deal was implemented in January 2016.
The US withdrew in 2018 under a new administration, and Iran resumed enrichment. The deal showed both the power and fragility of sanctions-for-concessions diplomacy.
The current Venezuela talks follow the same pattern: phased sanctions relief in exchange for negotiated political concessions. The Iran experience shows such deals can unravel when administrations change.
