UN Secretary-General Antonio Guterres (front) gives a lecture entitled "Facing Global Challenges: Finding Hope in Youth" at Cairo University in Cairo, Egypt, on Feb. 15, 2017. There is no plan B for the two-state solution between the Israelis and the Palestinians to resolve the Middle East conflict and achieve regional peace, UN Secretary-General Antonio Guterres told a press conference in Cairo on Wednesday following his meeting with Egyptian President Abdel-Fattah al-Sisi. The UN chief reiterated his statement at a lecture he later gave at Cairo University, attended by diplomats and students. (Xinhua/Meng Tao)