2015 Iran nuclear deal
The U.S. and five other powers lifted nuclear-related sanctions on Iran in exchange for restrictions on its atomic program. Iran regained access to frozen assets and resumed oil sales; the West got limits on enrichment.
Iran's oil exports surged and its economy rebounded as sanctions relief took effect.
Trump withdrew the U.S. from the deal in 2018 and reimposed sanctions, showing how quickly sanctions relief can reverse.
Like the Iran deal, the Russia waiver relaxes sanctions alongside a negotiated deal, and the president can reverse it at any time.
