In 2016, the Obama administration arranged for $400 million in foreign cash—stacked on wooden pallets—to be flown to Iran on an unmarked cargo plane. This payment was part of a larger $1.7 billion settlement to resolve a decades-old arbitration claim over a failed arms deal from the 1970s. CBS News CBS News +2 Here are the key details regarding the event: What was delivered? Pallets of foreign currency, including Swiss francs and euros, were used because U.S. sanctions against Iran prohibited transactions in U.S. dollars and restricted Iran's access to the international banking sys