HAVANA (Reuters) - Iranian parliament speaker Gholamali Haddadadel on Thursday dismissed the possibility of a U.S. military attack against its nuclear program, saying Washington would be "stupid" to undertake such action.

"We believe it is almost impossible that the United States would want to repeat the experience of Iraq," Haddadadel said in reply to a question from a University of Havana student.

"We hope the United States is not so stupid," he said, adding that the Iranian people were ready for any attack.

Haddadadel, visiting to Cuba to cement political ties between two countries at odds with with Washington, said Iran had no intention of making atomic bombs and dismissed Western suspicions as unfounded.

Communist Cuba defended Iran's nuclear program and rejected efforts by what it called U.S. "imperialism" and other Western powers to halt uranium enrichment in the Islamic nation.

"Nobody has the right to deny any nation the option of nuclear energy for peaceful use," the president of the Cuban National Assembly, Ricardo Alarcon, said in a greeting.

"What the world should fight is the monopoly that some have over weapons of mass destruction and, in particular, nuclear arms," Alarcon said.

"That specially applies to the only country in history that has employed those weapons against a civilian population," he said in reference to the U.S. bombings of Japanese cities toward the end of World War II.