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".
Presidency of Mohammad Khatami
Khatami is regarded as Iran's first reformist president, since the focus of his campaign was on the rule of law, democracy and the inclusion of all Iranians in the political decision-making process. However, his policies of reform led to repeated clashes with the hardline and conservative Islamists in the Iranian government, who control powerful governmental organizations like the Guardian Council, whose members are appointed by the Supreme Leader. Khatami lost most of those clashes, and by the end of his presidency many of his followers had grown disillusioned with him.