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. He was the 2014 recipient of the Vaughn-Ueda International Journalist prize.

From left: North Korean leader Kim Jong Un, senior Chinese diplomat Liu Jianchao, Chinese President Xi Jinping and Russian President Vladimir Putin. (Nikkei montage/Source photos by AP, Reuters and Yusuke Hinata)
Diplomat Liu Jianchao's trip comes as Xi seeks to 'bind' with Biden over North Korea