a student of Qom's fundamentalist cleric Mesbah Yazdi, spoke about the necessity of using nuclear weapons as a means to retaliate and announced that "based on religious law, everything depends on our purpose". In an interview with the Islamic Republic News Agency the same day, Gharavian rejected these reports, saying "We do not seek nuclear weapons and the Islamic religion encourages coexistence along with peace and friendship...these websites have tried to misquote me." On 11 April 2006, Iranian President Mahmoud Ahmadinejad announced Iranian scientists working at the pilot facility at Natanz had successfully enriched uranium to the 3.5 percent level, using a small cascade of 164 gas centrifuges. In the televised address from the city of Mashhad he said, "I am officially announcing that Iran has joined the group of those countries which have nuclear technology". In May 2006 some members of the Iranian legislature ("Majlis" or Parliament) sent a letter to UN Secretary-General Kofi Annan threatening to withdraw from the NPT if Iran's right to peaceful use of nuclear technology under the treaty was not protected. On 21 February 2007, the same day the UN deadline to suspend nuclear activities expired, Mahmoud Ahmadinejad made the following statement: "If they say that we should close down our fuel production facilities to resume talks, we say fine, but those who enter talks with us should also close down their nuclear fuel production activities". The White House's spokesperson Tony Snow rejected the offer and called it a "false offer". Iran has said that U.N. Security Council sanctions aimed at curtailing its uranium-enrichment activities unfairly target its medical sector. "We have thousands of patients a month at our hospital alone .. If we can't help them, some will die. It's as simple as that," said an Iranian nuclear medicine specialist. An Iranian Jew from California claimed "I don't believe in these sanctions... They hurt normal people, not leaders. What is the use of that?" Vice President of the Atomic Energy Organization of Iran Ghannadi framed the debate as a humanitarian issue, "This is about human beings. . . . When someone is sick, we should give medicine." Iran informed the International Atomic Energy Agency (IAEA) that fuel obtained from Argentina in 1993 would run out by the end of 2010, and that it could produce the uranium itself or buy the uranium from abroad. In February 2010, to refuel the Tehran Research Reactor