DUBAI, May 6 (Reuters) - President Hassan Rouhani said on Sunday Iran had prepared plans to respond to any decision by U.S. President Donald Trump to end the nuclear agreement with Tehran and that the U.S. would regret such a decision.

"We have plans to resist any decision by Trump on the nuclear accord," Rouhani said in a speech carried live by state television. "If America leaves the nuclear accord, this will entail historic remorse for it."

(Reporting by Dubai newsroom; Editing by Elaine Hardcastle)