“Nearly four years ago, the US, along with five other countries agreed to lift sanctions on Iran in exchange for the curtailment of the country’s nuclear programs. While this agreement helped thaw US-Iranian relations during the Obama administration, President Trump’s withdrawal from the deal has seen a massive decline in engagement between the two countries and a return to old animosities”
“Trump Has Undone the Years of Progress in US-Iran Relations Achieved Under Obama.” Seyed Hossein Mousavian, January 26, 2019. London School of Economics.