"I think that the Americans want to improve their relations with Syria to weaken Iran and to further isolate it in the region, so I don't think the Americans need Syria as a mediator with Iran, because that would improve relations between Tehran and Damascus,"

VOA: standard.2009.03.18

You can't isolate any particular thing.

你不能隔离任何一个事情。

普林斯顿公开课 - 国际座谈会课程节选