On April 12, according to the Wall Street Journal, Witkov, the US special envoy for the Middle East, said that < b > the United States is already taking a more friendly attitude towards Iran, and the "red line" for the United States is that Iran will build nuclear weapons. He said in an interview that in the first round of high-stakes nuclear talks this weekend, he hopes to build trust with Iran, which he believes may one day enter the "family of nations" and become an economic power. For years, diplomatic activities between the United States and Iran have been secret and indirect, communicating through a series of intermediaries and messengers. Iran has also been seeking indirect negotiations through mediators, but Wykov has promoted direct negotiations so that he can observe the body language of the other party.