Nuclear program of Iran
U.S. President Obama reportedly sent a letter dated 20 April 2010 to President Lula of Brazil, in which he outlined a proposal of fuel swap. While expressing skepticism that the Iranians would now be willing to accept such a deal, having provided "no credible explanation" for the previous deal's rejection, President Obama wrote "For us, Iran’s agreement to transfer 1,200 kg of Iran’s low enriched uranium (LEU) out of the country would build confidence and reduce regional tensions by substantially reducing Iran’s LEU stockpile." Turkish Prime Minister Recep Tayyip Erdogan received a similar letter. A senior U.S. official told the "Washington Post" that the letter was a response to Iran's desire to ship out its uranium piecemeal, rather than in a single batch, and that during "multiple conversations" U.S. officials made clear that Iran should also cease 20% enrichment; however, the official stated "there was no president-to-president letter laying out those broader concerns".
2013 Iranian presidential election
The President of Iran is the country's highest directly elected official, the chief of the executive branch, and the second most important position after the Supreme Leader. Duties are similar to heads of governments in other countries, except that the armed forces, Chief judiciary system, state television, and other key governmental organizations are under the control of the Supreme Leader of Iran. It is also an informal custom that cabinet ministers for sensitive departments like foreign relations and intelligence are coordinated with the Supreme Leader.