Steve Witkoff, President Trump’s chief Iran negotiator, offered the clearest outlines of the administration’s position in talks over Tehran’s nuclear program.

Any deal between the United States and Iran must include an agreement not to enrich uranium, U.S. special envoy Steve Witkoff said on Sunday, a comment that drew criticism from Tehran.

Iran’s president says his country will continue talks over its rapidly advancing nuclear program but will not withdraw from its rights because of U.S. threats.