WASHINGTON - The White House has not agreed to direct one-on-one talks with Iran’s government over its nuclear programme, US National Security Council spokesman Tommy Vietor said Sunday.Responding to a report published on the New York Times website, Vietor also said there was no deal to meet with Iranian officials after the Nov 6 US presidential election.“It’s not true that the United States and Iran have agreed to one-on-one talks or any meeting after the American election,” Vietor said in an e-mailed statement. “The president has made clear that he will prevent Iran from getting a nuclear weapon, and we will do what we must to achieve that.” He repeated that the US remains prepared to meet bilaterally with Iran.Iran has been a flashpoint in US foreign policy and in the US presidential election race between President Barack Obama and Republican nominee Mitt Romney. Romney has criticized Obama’s approach to dealing with Iran, which the US suspects is developing nuclear weapons capability. Iran insists that its nuclear programme is geared to peaceful purpose, and is not weapon-oriented. But Romney calls for a tougher line on Iran, including the imposition of stiffer sanctions than the president has set and the restoration of permanently stationed aircraft-carrier task forces in the region.The Times, citing unnamed administration officials, said the Iranian government has insisted that any talks take place after the election so they know who they’d be negotiating with.Since April, the US France, Britain, Germany, China and Russia - a group known as the P-5 +1 - have pursued three rounds of diplomacy in an effort to persuade Iran to abandon illicit aspects of its nuclear programme. While the western nations have stepped up the pressure on Iran by imposing dozens of financial and oil sanctions this year, the talks have so far failed to achieve a settlement.The Obama administration has said the sanctions have been biting into Iran’s economy.Oil output in Iran, previously the second-biggest producer in the Organization of Petroleum Exporting Countries after Saudi Arabia, has sagged to 2.63 million barrels a day in September from 2.85 million barrels in August, the International Energy Agency said in a report on Oct 12. Iran’s rial has lost more than half of its value against the dollar in street trading in the past two months.Iran has increased production of 20 per cent enriched uranium and grew its stockpile of low-enriched uranium, the International Atomic Energy Agency said on Aug 30. Highly enriched uranium can be used to produce electricity or to manufacture nuclear weapons.Agencies add: Meanwhile, Iranian Foreign Minister Ali Akbar Salehi has denied a new report published in a US newspaper over direct negotiations with the United States. "There is no such an issue as 'negotiations with America' and on the other hand we are not responsible to answer whatever they [US media] say," Salehi said at a press conference with his Central African counterpart Antoine Gambi on Sunday, IRNA reported. "We are negotiating in the form of the P5+1 group, if they mean nuclear talks, it is ongoing with the P5+1, but we don't have any discussions other than that," he added.