The White House warned Monday that there was no doubt that Iran seeks atomic weapons, rebuffing the head of the UN nuclear watchdog agency after he said there was no evidence for such a charge.
"This is a country that is enriching and reprocessing uranium and the reason that one does that is to lead towards a nuclear weapon," spokeswoman Dana Perino told reporters.
Uranium enrichment and reprocessing produces fuel for nuclear reactors, but can also be a key step to creating the core of an atomic bomb. Iran says it wants a civilian energy program, not an atomic arsenal.
Mohamed ElBaradei, head of the UN atomic watchdog the International Atomic Energy Agency (IAEA), said in an interview with CNN on Sunday that he had no evidence that Iran is building nuclear weapons and accused US leaders of adding "fuel to the fire" with their bellicose rhetoric.
Iran's leaders have repeatedly said they will never suspend enrichment, in flagrant defiance of repeated UN Security Council resolutions calling on Tehran to suspend the process.
"We have put on the table for Iran a path for them to get a civil nuclear program. And all they have to do to get there is to suspend its enrichment of reprocessing of uranium and they can come to the table and we can have a further discussion," said Perino.
"It's the Iranians who have decided not to be at that table," she said.
The United States has sharply escalated its rhetoric against the Islamic Republic, while slapping a new set of sanctions on its Revolutionary Guards, accused of spreading weapons of mass destruction, and its elite Quds Force, which was designated as a supporter of terrorism.