Some Iranian officials have said Iran would "wait and see" before judging how Obama would act in office, but the president- elect's call for Iran to stop part of its disputed nuclear work has drawn an uncompromising line from Iran.
Tehran says it will not suspend uranium enrichment, which Washington says has military aims, insisting it wants technology to make fuel for power plants not material for warheads. It says nuclear weapons have no role in Iran's defense doctrine.
"He (Obama) recently opined that the development of nuclear arms in Iran would be unacceptable, and also that Iran's support for 'terrorist organizations', such as Hezbollah (in Lebanon), is unacceptable," conservative cleric Ahmad Khatami said.
"I want to say that these statements are made by a raw person, an upstart (in politics), who has just reached power and is traveling the world of thoughts and imagination. The policy of deception and fraud has been an instrument that has defamed all American presidents," he said.
Khatami, a member of Iran's powerful oversight body, the Assembly of Experts, was speaking to worshippers in Friday prayers broadcast on state radio.
The cleric also said Obama was following the past "carrot and stick" policy, a reference to an offer by world powers of trade, nuclear and other incentives in return for halting its nuclear work. But they warn of more sanctions if Tehran refuses.
Obama, who takes office on January 20, said on Sunday he was ready to talk to Iran directly to give the Islamic Republic the "clear choice" to accept incentives or face tougher sanctions.
In his sermon, Khatami also criticized the heads of some Islamic countries and "particularly those of the Arab states" for not doing enough to stop Palestinian suffering in Gaza.
Hundreds of Iranians demonstrated in Tehran on Friday to call for an end to Israel's blockade of Gaza, Iranian media showed.
"Behind the crime scene against Muslims, the hands of some Islamic states can be seen," Khatami said. He singled out Egypt, which borders Gaza, in his sermon.
Egypt and Iran do not have full diplomatic ties. Cairo complained to the head of the Iranian mission in Egypt this week after Iranians protested outside Egypt's interests section in Tehran. An Egyptian diplomat said demonstrators threw a petrol bomb at the mission's fence and chanted anti-Egypt slogans.
(Reporting by Hashem Kalantari, writing by Edmund Blair; Editing by Richard Balmforth)
