By most accounts, China benefited enormously from the historic summit between Donald Trump and Kim Jong Un in Singapore. Beijing has long encouraged dialogue between the U.S. and North Korea (albeit with its blessing or, as was previously the case, within the structure of the Six-Party Talks) and, at least in the view of official Chinese media, can claim some credit for the June 12 meeting.

North Korea’s halted nuclear and missile tests and apparent interest in denuclearization are welcome changes from last year, and the cancellation of joint U.S.-ROK military exercises is a