North Korean leader Kim Jong-un welcoming Chinese president Xi Jinping at Pyongyang airport this week. Photograph:  KCNA via Reuters

Chinese president Xi Jinping has promised to play an active role in the denuclearisation of the Korean peninsula and offered to help with “security an(...)

A participant stands among cut-outs of South Korea’s president Moon Jae-in and North Korea’s leader Kim Jong-un during a pro-unification rally ahead of the upcoming summit between North and South Korea in Seoul, South Korea on Wednesday. Photograph:   Jorge Silva/Reuters

Friday’s meeting between South Korea’s president Moon Jae-in and North Korea’s supreme leader Kim Jong Un will mark the culmination of whirlwind diplo(...)