[Iran Has Not Yet Responded to Vance's Letter, Says US Tone Has Changed] BlockBeats reports on November 1st that Rezaei, Secretary of Iran's Supreme National Security Council, stated on October 31st that he had read the letter from US Vice President Vance but had not yet responded. He noted a significant change in the tone of the US letter, a good sign indicating that the Iranian people have consolidated their victory and authority. Rezaei stated that since the letter did not contain any specific content, he would not comment further at this time.