US officials believe that Mohsen Razai is in regular contact with Iran's Supreme Leader Mujtaba Khamenei and that the two have been in touch since Razai received Vice President JD Vance's letter, according to the Washington Post. It is important to note that American officials apparently believe that Mujtaba Khamenei is alive and acting as the supreme leader of Iran. This is the main reason why the letter was sent to the person closest to him at the moment, the secretary of Iran's Supreme National Security Council, Mohsen Razai. The letter is actually a message directly to the Iranian Supreme Leader Mujtaba Khamenei.