It says this shows strong interest in forging and maintaining strong relationships at the subnational level for the mutual benefit of the United States and China.

这表明中美双方希望巩固次级政府间的关系，同时实现互利共赢。

The U.N. will, at best, play the most limited of roles, given the revival of great power rivalry and the emergence of dangerous regional states and subnational entities like ISIS.

考虑到大国相争浪潮正在复兴，ISIS之类的危险地区国家以及和地方政权也在蠢蠢欲动，联合国至多也只能发挥微乎其微的作用。