The phone call with President Tsai Ing-wen was reportedly carefully planned, and Trump was fully briefed before the call, according to The Washington Post. It's not that Trump was unfamiliar with the "Three Communiques" or unaware of the fiction that there is "One China." Trump knew precisely what he was doing in taking the call. He was serving notice on Beijing that it is dealing with a different kind of president — an outsider who will not be encumbered by the same Lilliputian diplomatic threads that tied down previous administrations. The message, as John Bolton correctly put it, was that "the president of the United States [will] talk to whomever he wants if he thinks it's in the interest of the United States, and nobody in Beijing gets to dictate who we talk to."