“He then went into the history of China and Korea. Not North Korea, Korea. And you know, you’re talking about thousands of years . . . and many wars. And Korea actually used to be a part of China. And after listening for 10 minutes, I realized that it’s not so easy.”
— President Trump, interview with the Wall Street Journal, April 12, 2017
https://blogs.wsj.com/washwire/2017/04/12/wsj-trump-interview-excerpts-china-north-korea-ex-im-bank-obamacare-bannon/
https://www.washingtonpost.com/news/fact-checker/wp/2017/04/19/trumps-claim-that-korea-actually-used-to-be-a-part-of-china/?utm_term=.c5ab40962cf1
"It is true that the Korean peninsula was under the influence of China, but that was under the Ming dynasty - which was a long time ago and nothing to do with the People's Republic of China