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".
Cabinet of Iran
During the period 1907 to 1951 all Prime Ministers were selected by the Shah and subject to a vote-of-confidence by the Iranian Parliament. From 1951 to 1953, the members of parliament elected the Prime Minister among themselves (the head of the party holding the majority of seats), through a vote-of-confidence. The Shah, as the head of state, then appointed the parliament's selection to the position of Prime Minister, in accordance with the Westminster system of parliamentary democracy. Following the removal of Prime Minister Mohammad Mosaddegh via the 1953 Iranian coup d'état, this practice was abolished and the selection of Prime Minister reverted to the process in effect before 1951.
Following the Iranian Revolution of 1979, the position of Shah was removed as the head of state, effectively ending Iran's history of monarchy. Iran's new Islamic constitution stipulated that the President of Iran would nominate the Iranian cabinet, including the Prime Minister, which was to be approved by a vote-of-confidence in the Iranian parliament. The constitutional amendment of 1989 effectively ended the position of Prime Minister and transferred its powers to that of the president and vice president.