峰会之后，该国巩固了其作为世界主要强国的地位。

Following the summit, the nation solidified its status as a major world ___power.

在中国这样的全球强国，其环境政策会产生深远的影响。

Environmental policies in a global ___power like China have far-reaching consequences.

这项条约的谈判需要每个地区强国的合作。

The treaty negotiations required the cooperation of every regional ___power.