I think it's the political implications of this missile test that are noteworthy-and that is that Iran views the talks as dead-it doesn't view the talks positively, and now it's bracing for sanctions and quite possibly for war, and this missile test is a sign that Iran takes the military option very seriously and is ready to reciprocate if it's attacked."

VOA: standard.2009.12.18

Why should I act in such a way if I have no expectation or reasonable expectation that those around me will reciprocate?

如果我对别人的报答,没有期望或合理的期望,我为什么要这样做？

耶鲁公开课 - 政治哲学导论课程节选

But the United States has to free trade, and in that sense, it's likely to lean on the direction of keeping it open, the problems will arise if India does not reciprocate.

但美国非常坚决地,自由贸易，因而，其政策会倾向于,保持对外开放，如果印度不接受,这个机会营造互惠便会产生矛盾。

普林斯顿公开课 - 国际座谈会课程节选