Iran
After the Supreme Leader, the Constitution defines the President of Iran as the highest state authority. The President is elected by universal suffrage for a term of four years, however, the president is still required to gain the Leader's official approval before being sworn in before the Parliament (Majlis). The Leader also has the power to dismiss the elected president anytime. The President can only be re-elected for one term.
The President is responsible for the implementation of the constitution, and for the exercise of executive powers in implementing the decrees and general policies as outlined by the Supreme Leader, except for matters directly related to the Supreme Leader, who has the final say in all matters. Unlike the executive in other countries, the President of Iran does not have full control over anything, as these are ultimately under the control of the Supreme Leader. Chapter IX of the Constitution of the Islamic Republic of Iran sets forth the qualifications for presidential candidates. The procedures for presidential election and all other elections in Iran are outlined by the Supreme Leader. The President functions as the executive of affairs such as signing treaties and other international agreements, and administering national planning, budget, and state employment affairs, all as approved by the Supreme Leader.
Mohammad Javad Zarif
He welcomed the first visit by a foreign leader to Iran since Rouhani assumed the presidency ten days after his approval as Foreign Minister with the arrival of Oman's sultan, Qaboos bin Said Al Said. Stories spread that there was a secret agenda to his meetings with Iranian officials, involving claims that he came to convey messages from the United States and then to relay Iran's response to White House officials. On 5 September 2013, in an exchange prompted by his Rosh Hashanah greeting on Twitter, Zarif said that Iran does not deny the Holocaust, distancing the government from the often belligerent stances by former President Mahmoud Ahmadinejad. Genuineness of Zarif's tweeting in English was confirmed by CNN's Christiane Amanpour. On 27 September 2013, he met with U.S. Secretary of State John Kerry during P5+1 and Iran summit. It was the highest-level direct contact between the United States and Iran in the last six years. After the meeting, Kerry said that "We had a constructive meeting, and I think all of us were pleased that Foreign Minister Zarif came and made a presentation to us, which was very different in tone and very different in the vision that he held out with respect to possibilities of the future."