Iranian Foreign Minister Mohammad Javad Zarif, speaking to Iranian press, mocked a letter sent by 47 Senate Republicans to Tehran warning of their intent to undermine any future multilateral agreement – as a "propaganda ploy" and questioned whether its signatories – including the upper chamber's most senior members – fully understood their constitutional role.
"In our view, the letter has no legal value," Zarif said. "While no agreement has been reached, some political pressure groups are so afraid even of the respect of an agreement that they resort to unconventional methods, unprecedented in diplomatic history."
"The world is not the United States, and the conduct of interstate relations is governed by international law – not domestic law," he continued. "The authors may not fully understand that in international law, governments represent the entirety of their respective states and are responsible for the conduct of foreign affairs."