Opinion | Diplomacy failed in Ukraine. US and China must not let it happen twice
- Right when diplomacy is needed more than ever, top diplomatic figures in the US and China are resorting to open hostility
- The crisis in Ukraine should serve as a warning to both powers to set aside ideological differences for the sake of world peace

He called China an “aggressor”; denounced its alleged bad behaviour in Xinjiang, Tibet and Hong Kong, saying that its actions “are unjust and must stop”; and, regarding Taiwan, declared that “we certainly cannot trust the Chinese” and that “our responsibility is to make Taiwan a tough nut to crack”.
Having been characteristically soft-spoken as the face of China in Washington, Cui finally seemed unable to repress his strong conviction that “the US will not willingly accept the rise of a power with a very different social system, ideology, cultural traditions and even ethnicity”, accusing the US of “a very strong element of racism” in its China policy.
The open tit-for-tat between the veteran diplomats offers just one example of diplomacy being enervated at a time when it is more in demand than at any other moment since the end of the Cold War.
