After an internal debate, the Obama administration has decided to tell American commercial airlines to comply with China's demands to be notified of any flights through a broad swath of international airspace that it has claimed as an air defense zone, officials said Friday. Even as the United States continued to send military planes into the zone in defiance of China's declaration, officials said they expected civilian planes to go along with Beijing's new demands out of an abundance of caution. Officials said they were worried about an accident or unintended confrontation that could endanger civilian passengers. The administration’s decision...