 Now, underpinning the whole concept of nuclear deterrence is the hope that the weapons are only there to dissuade. But what do you understand about Chinese President Xi Jinping's thinking as he increases China's nuclear weapons program? Well, Xi's different in many ways to previous Chinese leaders, particularly when it comes to nuclear weapons. First, he elevated the nuclear weapons department, which was just a department, and he elevated it to be called a missile force department.