"The United States and its partners must not draw back on any sanctions against Iran unless all of these conditions are met and implemented," he wrote. "I believe it is in everyone's interest to continue making it clear to Iran's leaders that there are real consequences to supporting terrorism and attempting to develop nuclear weapons."
"As you know, international sanctions are having a genuine impact on the Iranian economy, and it is becoming increasingly problematic for Iran to sell its oil on the global market," he wrote. "The rial is severely declining, and the cost of Iran's critical imports continues to escalate. The international community is now more united than ever, but broader support to enact and enforce sanctions is critical."