In a searing televised address, Iranian President Hassan Rouhani called restrictions against Iran’s supreme leader “outrageous and idiotic” and said they showed “certain failure” on the part of the Trump administration to isolate Iran.

“You call for negotiations. If you are telling the truth, why are you simultaneously seeking to sanction our foreign minister?” Rouhani said Tuesday, referring to remarks by U.S. officials suggesting plans to sanction Foreign Minister Mohammad Javad Zarif later this month.

Iran’s Foreign Ministry spokesman said on Twitter that the “useless sanctioning” of Supreme Leader Ali Khamenei and Zarif, who led Iran’s nuclear negotiations with world powers, “means the permanent closure of the doors of diplomacy.”

“Trump’s government is annihilating all of the established international mechanisms for maintaining world peace and security,” said the spokesman, Abbas Mousavi.