Iranian Foreign Minister Mohammed Javad Zarif announced his resignation Monday.
"I am apologizing you for all the shortcomings ... in the past years during my time as foreign minister ... I thank the Iranian nation and officials," he said.
Zarif has been a vocal critic of Israel and the United States. Last week, he stated that he could not 'rule out' a war with the Jewish State. Yesterday, he warned US President Donald Trump that he would be "surprised" by Iran's response to US sanctions.