Iran's President Mahmoud Ahmadinejad will send a letter to President Bush proposing new ways to resolve "the current vulnerable situation in the world," an Iranian official said on Monday.
"In this letter, he has given an analysis of the current world situation, of the root of existing problems and of new ways of getting out of the current vulnerable situation in the world," government spokesman Gholamhossein Elham said.
Ahmadinejad had said earlier in the day that he would announce some "important news." It was not immediately clear whether he was flagging the letter to Bush.
The United States has spearheaded action against Iran's nuclear program, which it says is aimed at building atomic weapons. Iran, which has been reported to the U.N. Security Council, says it needs nuclear fuel only for power stations.
Elham told a weekly news conference Ahmadinejad's letter would be delivered to the Swiss Embassy in Tehran, which represents U.S. interests in Iran.
The United States and Iran severed official diplomatic ties in 1980, amid a crisis that began when a group of radical students stormed the U.S. embassy in Tehran and held 52 Americans hostage.
Iran threatens to withdraw from NPT
Meanwhile, Iran renewed its threats to withdraw from the Nuclear Nonproliferation Treaty on Sunday, with its president saying sanctions would be "meaningless" and its parliament seeking to put a final end to unannounced inspections of its nuclear facilities.
Ahmadinejad said he would not hesitate to reconsider NPT membership, speaking as Washington and its allies pressed for a U.N. Security Council vote to suspend Tehran's uranium enrichment program.
"If a signature on an international treaty causes the rights of a nation be violated, that nation will reconsider its decision and that treaty will be invalid," he told the official news agency IRNA.
Iran's parliament made similar threats in a letter to United Nations Secretary General
Kofi Annan read on state-run radio, saying the dispute over Iran's nuclear program must be resolved "peacefully, (or) there will be no option for the parliament but to ask the government to withdraw its signature" from a protocol to the NPT allowing for intrusive inspections of its nuclear facilities.
The Iranian letter also said parliament might order Ahmadinejad's government to review procedures for pulling out of the nuclear treaty, which signatories may do if they decide extraordinary events have jeopardized their "supreme interests."