Katsuji Nakazawa is a Tokyo-based senior staff and editorial writer at Nikkei. He spent seven years in China as a correspondent, and later as China bureau chief, and was the 2014 recipient of the Vaughn-Ueda International Journalist prize.

It is unclear whether Donald Trump realized Xi Jinping had set a diplomatic trap in a prepared statement that the U.S. president read during a China-U.S. summit last week. (Nikkei montage/Source photos by Getty Images)

US president's WWII allies remark gives historical legitimacy to today's China