In his new book McMaster wrote that foreign leaders treated the former president like a "chump" in their various interactions with him. During a 2017 trip across Asia, the former national security advisor recalled how he warned his boss to not let Chinese President Xi Jinping trick him into agreeing with policies that would benefit China and/or harm the U.S. or its allies. However, Trump wound up agreeing with Xi that military exercises in South Korea were a "waste of time" and that China had a case to annex Japanese territory.