There is still more work to do bewteen now, the conclusion of today's meeting.

就今天的会谈来看，反对派仍有许多工作要做。

But all this is believed to have caused the cancellation of informal talks bewteen North Korean officials and former American government workers.

但是这被认为是朝鲜官员和前美国政府工作人员之间非正式会谈取消的原因。