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".
Supreme Leader of Iran
The Supreme Leader of Iran (), also called the Supreme Leader of the Islamic Revolution (, '), officially in Iran called the Supreme Leadership Authority (, ') is the head of state, highest ranking political and religious authority of the Islamic Republic of Iran. The armed forces, judicial system, state television, and other key governmental organizations are under the control of the Supreme Leader of Iran. The current longtime Supreme Leader of Iran, Ali Khamenei, has been issuing decrees and making the final decisions on economy, environment, foreign policy, education, national planning, and everything else in Iran. Khamenei also makes the final decisions on the amount of transparency in elections in Iran, and has fired and reinstated presidential cabinet appointments. The Supreme Leader Ali Khamenei directly chooses the ministers of Defense, Intelligence and Foreign Affairs, as well as certain other ministries, such as the Science Ministry. Iran’s regional policy is directly controlled by the office of the Supreme Leader with the Ministry of Foreign Affairs’ task limited to protocol and ceremonial occasions. All of Iran’s ambassadors to Arab countries, for example, are chosen by the Quds Corps, which directly reports to the Supreme Leader.