Another reason given for developing TMD is that the DPRK has launched missiles and is doing research and development on nuclear weapons and that China has not exerted its influence on the DPRK.

• 美日建立TMD的另一个理由，就是说朝鲜民主主义人民共和国发射了导弹，在研制核武器，而中国没有对它施加影响。