After the handshakes, the signature ceremony and the diplomatic pomp of the historic meeting between President Trump and Kim Jong-un of North Korea, many Iranians could come to only one conclusion: We should talk, too. Yes, Mr. Trump in May unilaterally pulled the United States out of the nuclear agreement between Iran and a group of world powers. Yes, he has imposed new sanctions against Iran that are scaring away European investors. Yes, Mr. Trump has a long track record of changing his mind. Despite that, some here say that perhaps Iran’s leaders should make a move similar to Mr. Kim’s and propose a meeting. If Mr. Trump can sit down with the leader of such an isolated country, with its gulags, summary executions and stockpile of nuclear weapons and intercontinental missiles, […]