Iranian President Mahmoud Ahmadinejad launched into one of his greatest tirades at Washington on Sunday, saying the U.S. would be expelled from the Middle East with a "kick in the butt" and calling for U.S. leaders to be "buried" for threatening the country's nuclear program.

"They have such nerve to threaten us and say all options are on the table. May the undertaker bury you, your table and your body, which has soiled the world," Ahmadinejad said in a speech to a crowd of military and clerics.

During his visit to New York for the United Nations General Assembly late last month, Ahmadinejad went on a P.R. mission in sit-down interviews with several news outlets ranging from PBS to Fox News. He angered many Americans and triggered a walkout by the U.S. delegation at the U.N., however, when he raised the theory of the 9/11 terrorist attacks being carried out by the U.S. government.


On Sunday, he launched again into his 9/11 skepticism. "We have hundreds of unanswered questions about the September 11 incident to which they should respond, and we will not back down on this," Ahmadinejad said. "If they claim 3,000 people were killed on September 11, [the perpetrators] should be identified and executed. We will even help in their arrest provided they present evidence, but will not accept whatever Bush and Obama say."

Obama called Ahmadinejad's remarks at the U.N. "inexcusable," "offensive" and "hateful."

In his Sunday comments, some of the harshest directed at the U.S. in recent memory, Ahmadinejad, who also called Israel a "savage dog," said America needed to leave the region immediately.

"If you don't leave the region, you should know that soon the nations of the region will expel you with a kick in the butt," he said.