在过去六十年的大部分时间里，人们不可能在没有美国参加的情况下举行这样的重大对话，这一全球性的情况国际社会和美国都没有做好准备。
For much of the past 60 years, it would have been impossible to hold such a fundamental dialogue without US participation. Today, it is almost becoming a new global norm that neither the international committee nor the US is prepared for.