Obama concluded Joint Comprehensive Plan of Action (JCPOA) with Iran in Jul. 2015 after two years of secret negotiations
Iran dismantled 98% of its uranium stockpile and allowed unprecedented international inspections
The deal extended Iran's nuclear breakout time to one year, preventing immediate weapons development
Obama bypassed Senate treaty approval by calling the JCPOA a political commitment rather than formal treaty
Coordinated international sanctions forced Iran's economy to contract 6.8% before agreeing to negotiations
U.S. intelligence correctly assessed Iran had halted weapons development in 2003
The multilateral approach with Europe, Russia, and China created sustainable pressure Iran couldn't escape