Despite recent signs that US-China ties are stabilising, veteran China watcher Li Cheng argues that the two superpowers should not rush to sign a new joint communique, suggesting this would add little value as Washington is not upholding its previous commitments.The recent summit between President Xi Jinping and his US counterpart Donald Trump produced a “dramatic change” in the countries’ relationship, Li said in an interview published by Chinese news website Guancha.cn.“From viewing each...